117 entries under idiom topic. ×

4
flat tire(noun, expression)
3
at once
3
out of tune(expression, discordant, dissonant, screeching)
2
at full speed
2
coral reef(expression, pitfall)
2
drawing room(expression, receptacle)
2
dull as dishwater(expression, adjective, dull, weak)
2
hell for leather
2
like a shot
2
on the run
2
out of pitch(expression, discordant, dissonant, screeching)
1
admitting no exception
1
along for the ride(expression, adjective, calm, dull)
1
at full length
1
behind eight ball(expression, adjective, poor, low)
1
could care less(expression, adjective, indifferent, unconcerned)
1
dead set on(expression, strong, certain, definite)
1
devoid of interest(expression, weariness)
1
double whole note
1
flat surface
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APASmart Define. (2016). flat thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/flat/thesaurus/synonyms
ChicagoSmart Define. 2016. "flat thesaurus" https://smartdefine.org/flat/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, flat thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/flat/thesaurus/synonyms>.
MLASmart Define. "flat thesaurus" 1 March 2016. Web. 20 September 2026. <https://smartdefine.org/flat/thesaurus/synonyms>