Synonyms|391Antonyms|160|Broader|4Narrower|7Related|1k
1
masterful
1
multipurpose
1
neat(adjective, sound, competent)
1
omnificent
1
operant
1
operative
1
potent
1
powerful
1
pragmatic(adjective, idealistic)
1
skilled
1
ultraefficient
0
acceptable
0
accomplished
0
accurate
0
advantageous
0
ample
0
assiduous
0
avail
0
careful
0
complete
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APASmart Define. (2015). inefficient thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/inefficient/thesaurus/antonyms
ChicagoSmart Define. 2015. "inefficient thesaurus" https://smartdefine.org/inefficient/thesaurus/antonyms (accessed September 24, 2026).
HarvardSmart Define 2015, inefficient thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/inefficient/thesaurus/antonyms>.
MLASmart Define. "inefficient thesaurus" 12 November 2015. Web. 24 September 2026. <https://smartdefine.org/inefficient/thesaurus/antonyms>