7
jejune(adjective, immature)
7
lifeless(adjective, dull, excite, boring, unresponsive)
7
unimaginative(adjective, dull, excite, dry, boring)
7
uninfected(adjective, clean, pure, fresh, dead)
7
unsuccessful(adjective, useless, trivial, insufficient, hopeless)
7
unsullied(adjective, clean, perfect, pure, fresh)
6
abortive
6
bootless
6
counterproductive(adjective, poor, base, inferior, insignificant)
6
desolate(adjective, clean, dry, dead, empty)
6
inoperative(adjective, tired, over, lost, finished)
6
insignificant(adjective, poor, base, inferior, useless)
6
trifling(adjective, poor, base, inferior, insignificant)
6
trivial(adjective, poor, base, inferior, insignificant)
6
unimportant(adjective, poor, base, inferior, insignificant)
6
unsoiled(adjective, clean, perfect, pure, fresh)
6
valueless(adjective, poor, base, inferior, insignificant)
5
contemptible(adjective, poor, base, inferior, insignificant)
5
despicable(adjective, poor, base, inferior, insignificant)
5
dull(adjective, excite, boring, bland, insipid)
10 years ago|13k views|share |citing 
APASmart Define. (2016). sterile thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/sterile/thesaurus/synonyms
ChicagoSmart Define. 2016. "sterile thesaurus" https://smartdefine.org/sterile/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, sterile thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/sterile/thesaurus/synonyms>.
MLASmart Define. "sterile thesaurus" 1 March 2016. Web. 24 September 2026. <https://smartdefine.org/sterile/thesaurus/synonyms>