21 suddenly synonyms include immediately, instantaneously, instantly, in an instant, straight away, all of a sudden, at once, all at once, and abruptly. Suddenly is an adverb, and its antonyms are gradually and slowly. Here are some additional synonyms for "suddenly" with example sentences.
21 other ways to say suddenly.
A violent clash erupted suddenly.
He hit the brakes suddenly.
suddenly, the lights went out.
The weather became extremely cold suddenly.
when the power suddenly went out.