never-ending
Word family
Synonym discussion
Sense: adjective/1
Endless is the most neutral and frequent of these words, used for anything that seems to have no limit (endless possibilities, endless love). Unending is very similar but slightly more formal, often describing abstract qualities (unending devotion). Interminable is strongly negative and suggests the feeling of time passing very slowly (an interminable meeting), so it fits best with events or experiences. Perpetual stresses continuousness — something that never stops happening (perpetual noise from the construction site). For a tiresome, drawn-out task or situation, never-ending is the most natural everyday choice.
Common collocations
Etymology
Never-ending is a compound formed in English from 'never' (Old English næfre, from ne 'not' + æfre 'ever') and 'ending' (from end + -ing). The earliest known use is from the late 1500s, describing things that have or seem to have no conclusion.