Fart is an English language vulgarism most commonly use in reference to flatulence. The word "fart" is generally considered unsuitable in a formal environment by modern English speakers, and it may be considered vulgar or offensive in some situations. Fart can be used as a noun or a verb. The immediate roots are in the Middle English words "ferten", "feortan" or "farten"; which is akin to the Old High German word "ferzan" meaning 'to break wind'. Other roots lie in old Norse, Greek and Sanskrit. The word "fart" has been incorporated into the colloquial and technical speech of a number of occupations, including computing.