2
stable(adjective, ordered)
2
steady(adjective, ordered)
2
telling(adjective, sound, reasonable, violent, rational)
2
time-saving(adjective, close, mean, practical, prudent)
2
tireless(adjective, work, strain, firmness, labour)
2
uniform(adjective, ordered)
2
up to(verb, phrasal verb, power)
2
up to snuff(expression, idiom, keen, smart, adequate)
2
up to speed(expression, idiom, keen, smart, adequate)
2
usable(adjective, strong, open, reasonable, sensible)
2
versatile(adjective, skillful)
2
veteran(adjective, suitable, skilled, competent, accomplished)
2
vigorous(adjective, energetic, violent, powerful, lively)
2
well-qualified(skilled, qualified, specialized)
2
workable(adjective, open, reasonable, sensible, useful)
2
worthy(good, honest, noble, competent, capable)
1
working(adjective, open, reasonable, sensible, energetic)
1
Scotch(adjective, economical)
1
ablest
1
accommodating(adjective, expedient)
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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>