listen in

English Thesaurus

1. listen quietly, without contributing to the conversation (verb.perception)

hypernym	:	listen, listen,
definition	:	hear with intention (verb.perception)

2. listen without the speaker's knowledge (verb.perception)

hyponym	:	bug, intercept, tap, wiretap,
definition	:	tap a telephone or telegraph wire to get information (verb.perception)

derivation	:	eavesdropper,
definition	:	a secret listener to private conversations (noun.person)

derivation	:	eavesdropper,
definition	:	a secret listener to private conversations (noun.person)