Choose the perfect synonym or antonym for the word

Endless

/ˈendləs/

Something that has no end or limit

Synonyms:

An endless humming of helicopters filled the darkening air.

There were no lost days, no endless bouts of drinking.

There were endless legal adjustments that required her presence.

Middle English endlees, from Old English endeleas (end + suffix -less), akin to Old High German antolōs, from Germanic origin, meaning without end.

17 mentions per 1 million words

Often

Hint: Frequency according to COCA