4
colorless(adjective, dull, excite, boring, uninteresting)
4
decontaminated(adjective, clean, pure, dry, fresh)
4
dreary(adjective, dull, boring, uninteresting)
4
gaunt(adjective, clean, unproductive)
4
germ-free(adjective, clean, pure, wholesome, unpolluted)
4
neat(adjective, clean, pure, fresh, wholesome)
4
pedestrian(adjective, excite)
4
refined(adjective, clean, perfect, pure, natural)
4
salubrious
4
spiritless(adjective, dull, excite, boring, uninteresting)
4
stale(adjective, dull, boring, bland, insipid)
4
taintless(adjective, clean, perfect, natural, fresh)
4
void(adjective, useless, trivial, petty, frivolous)
3
abacterial
3
chicken-shit
3
idle(adjective, dry, useless, trivial, insufficient)
3
inefficacious
3
inefficient
3
issueless
3
low-value
10 years ago|13k views|share |citing 
APASmart Define. (2016). sterile thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/sterile/thesaurus/synonyms
ChicagoSmart Define. 2016. "sterile thesaurus" https://smartdefine.org/sterile/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, sterile thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/sterile/thesaurus/synonyms>.
MLASmart Define. "sterile thesaurus" 1 March 2016. Web. 25 September 2026. <https://smartdefine.org/sterile/thesaurus/synonyms>