4
staid(adjective, sober, serious, earnest, serious-minded)
3
prudent(adjective, reasonable, careful, intelligent, aware)
3
somber(adjective, sober, serious, earnest, serious-minded)
2
cute(adjective, smart, sensible, thoughtful, shrewd)
2
aware(adjective, reasonable, careful, intelligent, astute)
2
brainstorm
2
careful(adjective, reasonable, intelligent, aware, astute)
2
clever(adjective, smart, sensible, thoughtful, shrewd)
2
cogitative(adjective, smart, sensible, thoughtful, shrewd)
2
contemplative(adjective, smart, sensible, thoughtful, shrewd)
2
erudite(adjective, smart, sensible, thoughtful, shrewd)
2
judicious(adjective, reasonable, careful, intelligent, aware)
2
rational(adjective, reasonable, careful, intelligent, aware)
2
reasonable(adjective, careful, intelligent, aware, astute)
2
reflective(adjective, smart, sensible, thoughtful, shrewd)
2
sagacious(adjective, smart, sensible, thoughtful, shrewd)
2
sapient(adjective, smart, sensible, thoughtful, shrewd)
2
shrewd(adjective, smart, sensible, thoughtful, wary)
2
sombre(adjective, sober, serious, earnest, serious-minded)
1
astute(adjective, reasonable, careful, intelligent, aware)
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APASmart Define. (2016). goofy thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/goofy/thesaurus/antonyms
ChicagoSmart Define. 2016. "goofy thesaurus" https://smartdefine.org/goofy/thesaurus/antonyms (accessed September 26, 2026).
HarvardSmart Define 2016, goofy thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/goofy/thesaurus/antonyms>.
MLASmart Define. "goofy thesaurus" 24 March 2016. Web. 26 September 2026. <https://smartdefine.org/goofy/thesaurus/antonyms>