advanced Antonyms
quaint
requisite
resolvable
restrained
retarded
retrogressive
rose
rudimental
rudimentary
rusticated
regressive
regressed
quintessential
raw
razed
reactionary
readable
rear
recognizable
reductive
refluent
rusty
saved
scrutable
square
stemmed
stifled
stilled
stopped
stricken
struck
stunted
subnormal
spavined
sophomoric
self-evident
sempervirent
shabby
sheltered
shielded
simplistic
slovenly
soluble
solvable
superannuated
puerile
neolithic
original
out
outdated