89 entries under silly topic. ×

1
unworkable(foolish, fantastic, unwise, impractical)
0
beyond all reason(expression, idiom, foolish, fantastic)
0
ape(foolish, unwise)
0
bats in the belfry(expression, idiom, foolish, unwise)
0
batty(foolish, ridiculous, unwise, impractical)
0
berserk(foolish, unwise)
0
bonkers(foolish, unwise)
0
cuckoo(foolish, unwise)
0
delirious(foolish, unwise)
0
dingy(foolish, unwise)
0
dippy(foolish, ridiculous, unwise)
0
flipped(foolish, unwise)
0
flipped out(expression, foolish, unwise)
0
fruity(foolish, unwise)
0
illogical(fantastic, odd, ridiculous, incompatible)
0
mad as a March hare(expression, idiom, foolish, unwise)
0
mad as a hatter(expression, idiom, foolish, unwise)
0
maniacal(foolish, unwise)
0
mentally strange(expression, foolish, unwise)
0
nutty as fruitcake(expression, idiom, foolish, unwise)
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APASmart Define. (2016). strange thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/strange/thesaurus/synonyms
ChicagoSmart Define. 2016. "strange thesaurus" https://smartdefine.org/strange/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, strange thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/strange/thesaurus/synonyms>.
MLASmart Define. "strange thesaurus" 31 March 2016. Web. 25 September 2026. <https://smartdefine.org/strange/thesaurus/synonyms>