noun

a person who accompanies and looks after another person or group of people.

companion,duenna,protectress,escort,governess,nursemaid,keeper,protector,bodyguard,carer,minder

verb

accompany and look after or supervise.

she chaperoned the children at all times

accompany,escort,attend,shepherd,watch over,take care of,keep an eye on,protect,defend,guard,safeguard,shield,keep from harm,mind,screen,shelter,mother,nursemaid,nanny