Those interested in etymology, the history of words, should consult a dictionary or encyclopedia dedicated to the subject. The most authoritative source for English etymology is the Oxford English Dictionary, or OED.
While the OED is considered the authority on etymology, membership fees are expensive. Online users can find a comparable collection of word histories for free at the Online Etymology Dictionary. Users just need to type a word in the search bar and click “ok” to find a complete history – including past and present meanings, as well as translations, date and usage – related to that particular word.