quiet
restrained
tasteful
modest
chivalric
considerate
diffusive
disinterested
highly-strung
inoffensive
kind-hearted
large-hearted
large-minded
open-handed
public-spirited
self-denying
self-effacing
selfless
simple-hearted
unassuming
uncalculating
undemonstrative
unpretending
unpretentious
unremitted
unstinted
well-intentioned