9
surprised(adjective, adverb)
6
short(adverb, prepared, sudden, suddenly, unexpectedly)
6
back(adjective, adverb, end, round, backward)
6
unawares(adverb, prepared, suddenly, unexpectedly, abruptly)
5
backward(adjective, adverb, end, back, round)
5
unaware(adjective, suddenly, unexpectedly, unawares, abruptly)
4
confused(adverb, surprised, unmindfully, inside-out)
4
suddenly(adverb, unexpectedly, unawares, abruptly)
3
aft(adjective, end, back, backward, rear)
3
after(adjective, end, back, backward, rear)
3
astern(adjective, adverb, end, back, round)
3
by surprise(expression, idiom, adverb, short, prepared)
3
rearward(adjective, adverb, end, back, backward)
2
abaft(adjective, adverb, end, back, round)
2
unawarely(adverb, prepared)
1
sudden(short, suddenly, unexpectedly, unawares, abruptly)
1
abruptly(adverb, short, unprepared, quickly, sudden)
1
accidentally(short, sudden, suddenly, unexpectedly, unawares)
1
astonished
1
back of(expression, adjective, end, back, backward)
<123458>
11 years ago|4.4k views|share |citing 
APASmart Define. (2015). aback thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/aback/thesaurus/synonyms
ChicagoSmart Define. 2015. "aback thesaurus" https://smartdefine.org/aback/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, aback thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/aback/thesaurus/synonyms>.
MLASmart Define. "aback thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/aback/thesaurus/synonyms>