12 aback synonyms include suddenly, unexpectedly, unaware, unawares, abruptly, all of a sudden, off base, unanticipatedly, short, and surprisingly. Aback is an adverb, and its antonyms are slowly, tardily, and leisurely. Here are some additional synonyms for "aback" with example sentences.
12 other ways to say aback.
Here are 20 sentences using the word aback: I was taken aback by his rude comment.
I stood aback, unsure of what to say.
She stepped aback in surprise.
They were taken aback by the news.
We were completely taken aback.