unassertive
altruistic
backward
bashful
committed
consecrated
dedicated
deprecative
deprecatory
devoted
diffident
disinterested
humble
modest
rabbity
retiring
sacrificing
self-abasing
self-abnegating
self-abnegatory
self-denying
self-deprecating
self-depreciating
self-depreciative
self-devoted
self-distrustful
self-doubting
self-forgetful
self-immolating
self-neglectful
self-neglecting
self-renouncing
self-sacrificing
self-unconscious
selfless
shy
timid
unacquisitive
unassured
unpossessive
unpretentious
unselfconfident
unselfish
unselfreliant
unsparing of self
affable
avuncular
benignant
conciliatory
contrite
debonair
deferential
dismissive
easygoing
ingratiate
ladylike
low-key
megawatt
mild-mannered
offhand
self-possessed
self-restrained
sweet-tempered
teachable
unassuming
uncomplaining
unobtrusive
unostentatious