reasonable
sensible
OK
acceptable
admissible
agreeable
all right
alright
arguable
believable
colorable
conceivable
condonable
credible
creditable
defendable
defensibl
defensible
excusable
fiduciary
good enough
imaginable
impregnable
justifiable
maintainable
okay
passable
plausible
possible
rational
reliable
secure
supportable
trustworthy
trusty
unexceptionable
unimpeachable
unobjectionable
unquestionable
viable
vindicable
warrantable
workable
worthy of faith
breathable
co-ordinate
cognizant
comprehensible
deniable
discoverable
distinguishable
drinkable
explicable
feasible
legible
literate
presentable
recognisable
reconcilable
separable
thinkable
untenable
amenable