innocent
innocuous
benign
bright
dependable
fail-safe
firm
fresh
gentle
guaranteed
guiltless
hurtless
ill-less
innoxious
inoffensive
inviolate
invulnerable
mild
mint
nonmalignant
nonpoisonous
nontoxic
nonvirulent
painless
pristine
reliable
riskless
safe
scatheless
sound
stable
steady
trustworthy
unbroken
unbruised
undamaged
undamaging
undangerous
undefaced
undeformed
undemolished
undestroyed
unfaded
unharmed
unharmful
amiable
amuse
foolish
peaceful
harmful