Take the 2-minute tour ×
English Language & Usage Stack Exchange is a question and answer site for linguists, etymologists, and serious English language enthusiasts. It's 100% free, no registration required.

Can anyone tell me the etymological root of the word "fidelity" ? I've found here the adjective form of it to be "fidelitous" (faithful). I don't know whether it's correct. And what is the verb of it (i.e to trust) ?

share|improve this question
OED gives fide v. rare. [f. L. fīd-ĕre to confide.] trans. To confide or entrust to. With 1863 citation "The‥request that her infant daughter might be fided to the care of her friend." But I think the etymology is General Reference, and that verb form is Too Localised. –  FumbleFingers Aug 29 '12 at 22:25
Fide (v.) and Fidelitous (Adj.) says my teacher too. –  its_me Aug 30 '12 at 6:46
add comment

closed as general reference by FumbleFingers, tchrist, Mahnax, MετάEd, kiamlaluno Sep 3 '12 at 23:52

This question is too basic; it can be definitively and permanently answered by a single link to a standard internet reference source designed specifically to find that type of information.If this question can be reworded to fit the rules in the help center, please edit the question.

2 Answers

Based on (Merriam-Webster Online's definition), it comes from Latin (by way of French and Middle English): fides meaning faith and fidere meaning to trust.

Fidelitous is the adjective, although it's not used all that commonly. There's not a verb form that I've seen or can find, and the verb form wouldn't mean "to trust," but "to be faithful."

share|improve this answer
add comment

An English verb phrase along the same lines is to keep faith. There are not many definitions online; Wiktionary says

(transitive)to continue to have confidence in someone or something, and to support them or it

share|improve this answer
add comment

Not the answer you're looking for? Browse other questions tagged or ask your own question.