A close (but not perfect) synonym would be companion, or guardian.
A chaperone is a woman who accompanies a younger woman to make sure that there is no hanky-panky (sex) and that she her reputation is unharmed. The activity is called chaperoning. (It's seldom done nowadays in Western countries).
Synonyms usher monitor overseer protect guard companion guide
Armada, as in the Spanish Armada.
Regular Verbs
chaperone = el chaperón
Try Duenna
A chaperone
Yes. He made that movie called Chaperone
An unwelcome chaperone is called a Gooseberry
The Chaperone is from Season 6 :)
The Drowsy Chaperone was created in 2006.
Her brother went with her as her chaperone when she went out that night.
Duenna may be the word you want. It is used in English for a governess or chaperone.
The Chaperone - 1909 was released on: USA: 14 April 1909
The Chaperone - 1974 is rated/received certificates of: Australia:R (1978) Belgium:KNT
(CHAPERON or CHAPERONE) Faculty advisor, adult escort, monitor, or, disparagingly, watchdog.