unstrengthen
VERB
weaken
Synonyms
STRONGEST
abate
decline
decrease
depress
dilute
diminish
dwindle
halt
impair
lessen
lower
reduce
sap
soften
undermine
wane
STRONG
adulterate
crumble
cut
debase
debilitate
devitalize
droop
enervate
exhaust
fade
fail
faint
flag
impoverish
invalidate
languish
limp
lose
minimize
mitigate
moderate
relapse
relax
temper
thin
tire
totter
tremble
vitiate
wilt
WEAK
Antonyms
VERB
debilitate
Synonyms
Antonyms
VERB
disable
Synonyms
Antonyms
VERB
immobilize
Synonyms
Antonyms
From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.