chivalrous
She tripped and fell on the uneven pavement, and a young man chivalrously helped her up.
He chivalrously opened the car door for his sister.
After chivalrously allowing women and children to leave, the militia attacked the town.

SMART Vocabulary: related words and phrases

Polite and respectful
candy coat
candy-coated
chivalric
chivalrous
chivalry
couth
deferential
deferentially
euphemism for someone/something
euphemistic
hyper-civilized
keep a civil tongue in your headidiom
manner
minced oath
mind/watch your mannersidiom
tactful
tactfully
ultra-civilized
ultra-refined
urbane