established
evidenced
tested
tried
verified
well-tried
ascertained
attested
authenticated
borne out
certified
circumstantiated
confirmed
corroborated
demonstrated
dependable
determined
faithworthy
fixed
incorruptible
inviolable
proved
reliable
responsible
settled
shown
straight
substantiated
sure
to be trusted
tried and true
true
trustable
trustworthy
trusty
unfalse
unperfidious
untreacherous
validated
hooven
unproven