A Sikh is a follower of Sikhism, a religious faith originating in the Indian subcontinent (historic Punjab).
The word Sikh is derived from the Sanskrit ? (please look at the etymology paragraph)word shishya which means disciple or student. In the Punjabi language the word Sikh also means to learn. So a Sikh is a disciple of the Ten Gurus and a follower of the teaching the teachings in the Sikhism's holy book, the Sri Guru Granth Sahib (SGGS).
The derivation of the work Sikh is very interesting. It's sources are confusing because Punjab has had many civilizations living in it's plains and thus many languages. Infact it has had the oldest civilization and the maximum fusion of civilizations compared to any other place in the world. The Harappans (Indus civilization), Aryans, Persians, Greeks, Arabs, Afghans, Turks, Mughals, Sikhs, Britishers have had their empire over the plains of Punjab. Punjab has been basically been a place which has been plundered and looted, right from the time the Aryans (Brahmins as called in India) came from Central Asia, Aral Sea and plundered the Indus valley civilization and completely destroyed it. Very less is known about the Indus civilization and whether they looted and plundered some other pre existing civlization. In Brief the major empires that existed in Punjab have been the Persian, Greek, Kushan, Muslim (Afghan,Turk, Arab,Mongol), Sikh, British. None of these have established their empires without having wars with the previous empires and creating havoc in the country. The Afghans, Turks and Mongols were basically looters and plundered the countryside in repeated attempts.
In 1469 when Guru Nanak was born all the major empires as mentioned above had already left a mark in Punjab, except the Britishers. Babar (a Mongol) was ruling over India at that time. The Language of Punjabi was thus a confluence of all the existing civilizations and there are still words which are of Greek, Persian, Urdu and Sanskrit origin in modern spoken and written Punjabi (written Punjabi being called Gurmukhi as it was formed by Nanak II , Guru Angad. English words have naturally made a presence. Thus all civilizations left a mark in Punjab and thus its language.
Interestingly the religion of Nanak, Sikhism is in the same way a confluence. It has verses by people of different religions and races in its holy book the Guru Granth Sahib and so are its concepts of love and brotherhood unique in the world. You don't need to accept Nanak as your Prophet to be happy, attain moksh, nirvana, go to heaven, escape from cycle of birth and death etc. This confluence should be complete and as there was bloodshed in Punjab throughout history , Nanak X, Guru Gobind Singh, transformed the Sikhs to Khalsa ('pure', Persian origin) The Army of God, (Akal Purakh ki Fauj) saints-soldiers, thus in some metaphysical way creating a unique religion necessarily related to what happened in the land before the Nanaks and during their time. Kirpan, the sword comes from the words 'kirpa' and 'aan'. Kirpa is Sanskrit in origin and means 'an act of kindness' whereas 'aan' is Persian in origin and means 'self respect'. Thus this kirpan signifies to what happened in this land throughout history. The Kirpan was to protect people resulting in 'aan', self respect. This single word Kirpan signifies what this land and inhabitants lacked. The Kirpan has other metaphysical attributes in combination with the other four K's, specially the 'Kesh' and 'Kara'.
It is common knowledge that the languages of the Punjab region and also the Indian sub-continent are in some way related and have evolved from some common source. They being called Indo-European. Sanskrit is Indo-european in nature and the sanskrit words of mother (modor OE) and brother (brodor OE) and respectively 'matr' and 'bhratr'. Many such links can be found. After all the Aryans came from the Northern Hemispheres and have to bring some language with them. OE : Old English.
By saying that the word 'Sikh' is Sanskrit in origin is not going in depth of a word. The word 'Shishya' (disciple) has no similarity with the word Sikh and so does Saknoti (is able). A simple pronunciation of the words will reveal that. The word Sikh comes from some word or origin in the empires and languages that existed in the plains of Punjab. Some similar words are in Persian and Greek (they necessarily have a relation) . In modern Punjabi the word 'Sikh' means 'to learn'. Saying that 'Sikh' originates in Sanskrit is a distortation of facts. The word most similar to the work Sikh is Psyche or Psukhe of Greek origin. They mean soul or mind. It will be clear that the disciple will always have an open mind always wishing to learn new things and be able to look at things logically with a broad minded perspective. The word also means able and strong from some other derivations in Indo-european languages. This is what Guru Nanak desired from his followers and thus the term Sikh for them.
The baptised Sikh is called a Khalsa or the "Pure One". When a Sikh becomes a Khalsa, he/she is supposed to have pledged his/her life to the Guru, and is expected not to desist sacrificing anything and everything in a struggle for a just cause.
Historically, Sikhs have been known to be great warriors. The tenth Sikh guru Gobind Singh is considered a great military leader and strategist of his time. He inspired and eventually lead a relatively small number of Sikh forces to remarkable triumphs over expansive state armies of the Mughal king Aurangzeb. It is perhaps owing to such inspired passion or the singular religious devotion of the Khalsa that one may encounter many instances of remarkable gallantry displayed by Sikh fighters throughout history. The Battle of Saragarhi (1897) is remembered as one of many battles where the Sikhs have fought with unflinching strength. In the Battle of Saragarhi, the Sikh Havildar Ishar Singh with 21 other soldiers fought with great bravery against 10,000 Afridi tribesmen. This battle has been taught in history lessons in French schools for many years as a model and an example of extreme human bravery, sacrifice and of comradeship. In the two World Wars, over 80,000 Sikhs died for the allied forces in battles. Many Sikhs have received the Victoria Cross and the Param Vir Chakras for their gallantry and courage.
As a consequence of the above, even today gallantry and machoism are much appreciate values in Sikh cultures. It is not uncommon to see tall, well-built Sikh youths driving open (roofless) Jeeps, SUV's or bigger, macho motorbikes such as Royal Enfield's Bullet. Despite their small percentange in Indian population, Sikhs have regularly figured in national Indian sports squads (especially field hockey and athletics, the traditional dances and sports of Punjab almost always manifest flowing energy or physical strength.
Precisely for this prevalence of machismo, Sikh culture is clearly male dominated and women play, as in myriad other cultures, only a secondry role in society.
Since Sikhism originated in the region of Punjab, most Sikhs trace their roots to that region (though in recent times, with the spread both of Sikhism and Sikhs, one might encounter Sikhs belonging to other geographical locations across the world). So more often than not, a Sikh might also be identified as a Punjabi, although one should not be confused with the other. Consequently, and also because the Guru Granth Sahib is written in Gurmukhi, the script of the Punjabi language, most Sikhs are able to speak, read or write the language, or are at least familiar with it.
A Sikh man almost always bears the second name of Singh, which means 'lion', and a Sikh woman can be identified with a second name of Kaur (Though the name Kaur is an exclusively Sikh name, Singh is quite often encountered in Hindu names as well). Additionally, except only a very few cases, the same first names as used for men are used for women. In other words, though one may not be able to tell the gender of Sikh person from his/her first name, the second name of Singh or Kaur makes the distinction completely clear. Moreover, the said first names usually end with common suffixes such as: inder, jeet, preet, pal, meet, deep, mail, bir, want etc. Even the prefixes of the first names aren't too much varied. The commonest of prefixes are: Gur, Har, Man, Bal,Dal, Kul, Jas etc. The various combinations of these prefixes and suffix make up Sikh first names.
Keeping above in mind, a few examples of Sikh names might be:
Despite the above unwritten conventions that are usually followed while naming Sikh children, till a generation earlier, shorter, one syllable names such as: Banta Singh, Bhag Singh, Jant Singh, Jeet Kaur, Har Kaur etc. could be easily encountered especially in rural areas of Punjab. Other than that, modern Sikh families living in bigger, cosmopolitan cities, have adopted names from other communities as well. For instance, in New Delhi you might find a Sikh girl named simply Amita. In this case, the second name Kaur has been done away with and more significantly, the name Amita is unlike any conventional Sikh first name and is, in fact, a name more commonly associated with a Hindu girl.
So, though it might be easy to indentify a Sikh by his/her name, people with "non-Sikh" names can be Sikhs too.
The following is the daily routine to be followed by a practising Sikh. These are of course not mandatory to be a Sikh but rather an ideal:
This section deals with the general duty of a Sikh to society and God rather than his/her daily practices dealt with in the previous section.
The relationship between the Sikh (‘disciple’) and the Guru (‘Master’) is very powerful and dominate and is central to understanding the reason for the strong dedication and devoted service that is performed by the followers of this religion. The Sikh believes that the tenth Guru is their spiritual father and that all other Sikhs are his/her spiritual brothers or sisters. The commitment by the disciple to the Guru is total and so is the dedication of the Gurus to the Panth or followers. The Gurus have spoken very highly of their disciples.
Guru Gobind Singh says the following about his Sikhs or Khalsa (“the pure ones”):
The Khalsa is my true image. I dwell in the Khalsa. Khalsa is my chief purpose. I am forever with the Khalsa. Khalsa is my closest friend. Khalsa is my mother, father & my comfort. Khalsa is my caste & creed. My creation is through the Khalsa. Khalsa is my haven and storehouse. Because of the Khalsa I am honoured. Khalsa is my body & spirit. Khalsa is my life & soul. Khalsa is my total, true Guru. Khalsa is my courageous friend. Khalsa is my wisdom & knowledge. I will always contemplate for the Khalsa. Full tribute of the Khalsa is beyond me. It is impossible to truly praise the Khalsa with one tongue. I certify that in the above, nothing is false. God and Guru Nanak are my witnesses to this truth.
Further, several of the Sikh Gurus carried out extreme sacrifices - all for the furtherance of the cause and this was done without any regard for personal self-perservation, benefit or gain. Guru Arjan Dev, the fifth guru was martyred by the then Mughal ruler, Emperor Jahangir for not amending the Adi Granth, the Sikh Holy book to reflect his views.
The ninth Sikh Guru, Guru Tegh Bahadur became the 'leader' of the Kashmiri Hindus to protect and save these tribesmen from the tyranny of the rulers of the nation - He made the ultimate sacrifice and was martyred by Emperor Aurangzeb for not converting to Islam.
Guru Gobind Singh is remembered by the Sikhs as a prophet who has made the most sacrifice for the Panth or ‘Community’. Not only did he have to endure the sacrifice of his father Guru Tegh Bahadur, but also his mother and all his four sons or Four Sahibzadas Ajit Singh, Jujhar Singh, Zorawar Singh and Fateh Singh
On losing his sons, Guruji consoled their mother thus: “Mother of the Panth, What if our four sons are gone? They still live in God’s Kingdom, and forever shall live the Khalsa, Millions of our brave and dear sons." Guruji further said that their sons were 4 'gifts of virtues' from God – "Their death has passed these four great virtues into the Khalsa Panth – ‘Ajit’ means Invincible; ‘Jujhar’ means warrior; ‘Zorawar’ means Brave; and ‘Fateh’ is victory. So these qualities will live in our Khalsa.”