RichThesaurus
tough nut
tough nut
synonyms
hard-nosed
inflexible
steadfast
adamant
unshakable
firm
obdurate
resolute
unyielding
single-minded
unwavering
unflagging
unchangeable
immobile
immovable
staunch
perseverant
relentless
stand pat
tenacious
unbending
motionless
rigid
dead set on
persevering
mulish
dogged
set
insistent
stationary
unalterable
indefatigable
constant
steady
intransigent
locked in
perseverative
pertinacious
hardheaded
uncompromising
bullheaded
impassive
hanging tough
quiescent
stable
fast
immotile
secure
rooted
unmodifiable
more synonyms
tough nut
antonyms
yielding
unfixed
undetermined
mobile
irresolute
moving
indifferent
movable