faillir signifie anglais

fail [failed, failing, fails]▼◼◼◼(not achieve a stated goal)
verb
[UK: feɪl] [US: ˈfeɪl]Some analysts consider Somalia as the failed state par excellence. = Certains analystes considèrent la Somalie comme l'État failli par excellence.

ail [ailed, ailing, ails]▼◼◻◻(to cause to suffer)
verb
[UK: eɪl] [US: ˈeɪl]