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effectiveness
effectiveness
synonyms
efficacy
power
potency
strength
force
forcefulness
validity
cogency
punch
usefulness
weight
efficiency
use
competence
vigor
value
influence
ability
capability
advantage
benefit
effect
persuasiveness
suitability
aptitude
drive
utility
fitness
soundness
authority
helpfulness
effectuality
skill
success
point
vitality
practicality
adequacy
validness
spirit
energy
powerfulness
zip
impressiveness
liveliness
profitability
get-up-and-go
merit
virtue
significance
more synonyms
effectiveness
antonyms
weakness
incompetence
ineffectiveness
inability
disadvantage
uselessness
inefficiency
ineffectualness
lethargy
enervation
incapacity
inefficacy
inadequacy
invalidity
impotence
inappropriateness
idleness
tiredness
insufficiency
etiolation
languor
lameness
ineptness
illogicality
inactivity
lassitude
laziness
unproductiveness
unenthusiasm
inactivity
senility
insignificance
effeteness
frailness
triviality
unimportance
exhaustion
unproductivity
flimsiness
ineffectuality
ineptitude
frailty
vagueness
infirmness
feebleness
malaise
failure
infirmity
unhealthiness
sickliness
more antonyms