4
masterful(adjective, keen, smart, intelligent, competent)
4
methodical(adjective, close, mean, practical, neat)
4
organized(adjective, exact, ordinary, usual, careful)
4
pragmatic(adjective, sensible, practical, realistic, applied)
4
profitable(adjective, effective, adept)
4
ready(adjective, prompt, precise, quick, competent)
4
regular(adjective, good, excellent, exact, ordinary)
4
saving(adjective, close, mean, practical, prudent)
4
strong(adjective, good, sound, tough, right)
4
tough(adjective, strong, complete, intense, exact)
4
utilitarian(adjective, strong, reasonable, sensible, useful)
4
valid(adjective, power, sound, right, reasonable)
3
adapted(adjective, decent, adequate, skilled, qualified)
3
assiduous(adjective, work, strain, firmness, labour)
3
au fait(expression, adjective, keen, smart, decent)
3
brilliant(keen, smart, intelligent, competent, capable)
3
cogent(power, sound, reasonable, violent, rational)
3
cost-effective(adjective, close, mean, practical, prudent)
3
crack(adjective, expert, capable, skillful, talented)
3
decisive(adjective, effective, adept)
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APASmart Define. (2015). efficient thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/efficient/thesaurus/synonyms
ChicagoSmart Define. 2015. "efficient thesaurus" https://smartdefine.org/efficient/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, efficient thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/efficient/thesaurus/synonyms>.
MLASmart Define. "efficient thesaurus" 13 April 2015. Web. 22 September 2026. <https://smartdefine.org/efficient/thesaurus/synonyms>