What are the opposite words for once?

Once is an adverb that indicates an event that occurred at a specific time in the past. The antonyms for the word "once" can vary based on the context in which it is used. If we are talking about repetitive or frequent events, then the antonyms for "once" could be words like repeatedly, frequently, constantly, or regularly. Alternatively, if we are talking about something that hasn't happened yet or will never happen, then words like never, again, second time, perpetual, always could be antonyms for "once". On the other hand, if we are talking about a momentary or brief event, then words like momentarily, shortly, or briefly could be antonyms for "once".

Antonym of the day

uncover, unwrap, stay.