5
throw(verb, disturb, confuse, mistake, baffle)
4
knock for six(verb, expression, idiom, delight, overwhelm)
4
strike(verb, shock, affect, commotion, alarm)
3
petrify(verb, shock, commotion, wonder, astonishment)
3
abash(verb, dull, disturb, confuse, agitate)
3
blow away(verb, expression, phrasal verb, upset, shock)
3
discombobulate(verb, disturb, confuse, frustrate, mistake)
3
hit(verb, shock, commotion, astonishment)
3
jolt(verb, disturb, shock, confuse, agitate)
3
knock out(verb, expression, upset, disturb, shock)
3
put away(verb, expression, phrasal verb, surprise, astonish)
3
shake(verb, disturb, shock, agitate, anger)
3
upset(verb, shock, confuse, bewilder, daze)
2
dumfound(verb, shock, occasion, wonder, suddenness)
2
floor(verb, upset, disturb, delight, excite)
2
leave open-mouthed(expression, confuse, alarm, confound, disconcert)
2
affect(verb, shock, commotion, astonishment)
2
befuddle(verb, disturb, shock, confuse, baffle)
2
destroy(verb, shock, commotion, astonishment)
2
disturb(verb, confuse, agitate, anger, shake)
11 years ago|7k views|share |citing 
APASmart Define. (2015). flabbergast thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/flabbergast/thesaurus/synonyms
ChicagoSmart Define. 2015. "flabbergast thesaurus" https://smartdefine.org/flabbergast/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, flabbergast thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/flabbergast/thesaurus/synonyms>.
MLASmart Define. "flabbergast thesaurus" 13 April 2015. Web. 26 September 2026. <https://smartdefine.org/flabbergast/thesaurus/synonyms>