Synonyms|428Antonyms|78|Broader|9Narrower|13Related|102

201 entries under noun topic. ×

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serviceableness(service, practicality, usefulness, helpfulness)
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skilfulness
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sock(force, power, strength, energy)
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speed(power, strength, energy, vigor)
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sprightliness
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stimulus(power, strength, energy, vigor)
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strain(power, strength, energy, vigor)
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stuff(drive, power, strength, energy)
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subjection(power, strength, energy, vigor)
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tension(power, strength, energy, vigor)
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trouble(power, strength, energy, vigor)
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turn(ability, capacity, competence, potential)
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velocity(power, strength, energy, vigor)
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vigour
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vim(power, strength, spirit, vigor)
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vivacity(power, strength, spirit, vigor)
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voltage(vigor, liveliness, vitality, get-up-and-go)
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wattage(vigor, liveliness, vitality, get-up-and-go)
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what it takes(expression, idiom, force, power)
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wherewithal(power, ability, skill, means)
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APASmart Define. (2015). efficacy thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/efficacy/thesaurus/synonyms
ChicagoSmart Define. 2015. "efficacy thesaurus" https://smartdefine.org/efficacy/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, efficacy thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/efficacy/thesaurus/synonyms>.
MLASmart Define. "efficacy thesaurus" 10 April 2015. Web. 29 September 2026. <https://smartdefine.org/efficacy/thesaurus/synonyms>