to have eaten sauce: to be impudent or presumptuous; similarly to have drunk of sauce's cup. Obsolete.

to have eaten sauce: to be impudent or presumptuous; similarly to have drunk of sauce's cup. Obsolete.

intransitive. To use abusive or impertinent language.

colloquial. Impudent, insolent, or disrespectful speech. Chiefly in to give cheek. Cf. jaw, n.1 6.

intransitive. To speak in an insolent, disrespectful, or cheeky manner. Cf. intransitive use of to sass back at sense 2a.

to talk back: to answer back; to indulge in ‘back-chat’. North American colloquial.

intransitive, to use back-chat (to).

intransitive. To talk back to a person, esp. in an insolent manner. Also transitive. Cf. back-chat v. at back-chat, n. derivatives.