"sterile" in the adjective sense
1. sterile, unfertile, infertile
incapable of reproducing
"an infertile couple"
2. aseptic, sterile
free of or using methods to keep free of pathological microorganisms
"a sterile operating area"
"aseptic surgical instruments"
"aseptic surgical techniques"
3. sterile, unimaginative, uninspired, uninventive
deficient in originality or creativity lacking powers of invention
"a sterile ideology lacking in originality"
"unimaginative development of a musical theme"
"uninspired writing"
Source: WordNet® (An amazing lexical database of English)
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