2
lethargic(adjective, stiff)
2
serious
2
sober
2
unplayful
1
severe
1
solemn
1
stiff
1
weighty
0
acute
0
austere
0
bad
0
big
0
critical
0
dangerous
0
deep
0
devout
0
dull
0
earnest
0
grave
0
great
<12>
11 years ago|411 views|share |citing 
APASmart Define. (2015). kittenish thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/kittenish/thesaurus/antonyms
ChicagoSmart Define. 2015. "kittenish thesaurus" https://smartdefine.org/kittenish/thesaurus/antonyms (accessed September 25, 2026).
HarvardSmart Define 2015, kittenish thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/kittenish/thesaurus/antonyms>.
MLASmart Define. "kittenish thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/kittenish/thesaurus/antonyms>