RichThesaurus
hard and fast
hard and fast
synonyms
fixed
rigid
inflexible
firm
set
established
decided
strict
definite
unalterable
unchangeable
settled
uncompromising
unvarying
invariable
determined
unwavering
unshakeable
inexorable
clear-cut
stubborn
immovable
unyielding
tough
cast-iron
stiff
immutable
iron-willed
indurate
precise
unpersuadable
bloody-minded
obdurate
intransigent
adamant
hard-line
irreversible
obstinate
unequivocal
unmalleable
rigorous
unambiguous
tenacious
black and white
unbending
unchanging
single-minded
stiff-necked
stringent
resolute
more synonyms
hard and fast
antonyms
flexible
vague
variable
compliant
indefinite
indistinct
unpredictable
soft
uncertain
unfixed
lenient
movable
changeable
changing
blurred
ambiguous