Chaperone

I'm your chaperone.

Tom and Mary don't need a chaperone.

I'd make a good chaperone.

I'll be your chaperone.

Girls were not allowed to go out with boys without a chaperone.

The young couple was accompanied by a chaperone.

Mary will be there to act as chaperone.

Do Tom and Mary need a chaperone?

They played you off very cunning, Eliza. If it had been only one of them, you could have nailed him. But you see, there was two; and one of them chaperoned the other, as you might say.

'Purcell had volunteered to chaperone a delegation of female students'