harmless
innoxious
inoffensive
benign
homely
humble
humble-looking
humble-visaged
humblest
inglorious
innocent
least
low
lowest
lowliest
lowly
mean
modest
nonmalignant
nonpoisonous
nontoxic
nonvirulent
plain
poor
sapless
simple
small
teachable
undamaging
undistinguished
unhurtful
unimportant
uninjurious
unobnoxious
unoffending
unpretentious
banal
blameless
forgettable
impervious
inaccessible
inconsequential
inconspicuous
ineffective
irrelevant
mundane
oblivious
unconcerned
uneventful
unrelated
unremarkable
unscathed
untroubled
valueless