official
unchangeable
accepted
accustomed
acknowledged
actual
admitted
affirmed
allowed
approved
ascertained
attested
authenticated
avowed
borne out
categorically true
certain
certified
chronic
circumstantiated
conceded
confessed
corroborated
countersigned
deep-dyed
deep-engraven
deep-fixed
deep-grounded
deep-laid
deep-rooted
deep-seated
deep-set
deep-settled
demonstrated
determined
documentary
dyed-in-the-wool
effectual
embedded
embossed
endorsed
engrafted
engraved
entrenched
established
etched
factual
fast
firmly established
fixed
granted
graven
firmed
infirmed
reaffirmed
reconfirmed
termed
unconfirmed