Definition of listen verb from the Oxford Advanced Learner's Dictionary

listen

verb

ˈlɪsn

ˈlɪsn

1 [intransitive] to pay attention to somebody/something that you can hearListen! What's that noise? Can you hear it?Sorry, I wasn't really listening.He had been listening at the door.listen to somebody/something to listen to musicI listened carefully to her story.You haven't been listening to a word I've said!

Help

You cannot ‘listen something’ (without ‘to’):

i'm fond of listening to classical music. pronunciation English

i'm fond of listening to classical music. pronunciation American

I'm fond of listening to classical music.I'm fond of listening classical music.

2 [intransitive] listen (to somebody/something) to take notice of what somebody says to you so that you follow their advice or believe themNone of this would have happened if you'd listened to me.Why won't you listen to reason?

3 [intransitive] (informal) used to tell somebody to take notice of what you are going to sayListen, there's something I have to tell you.

Phrasal verbs

listen (out) for something

to be prepared to hear a particular soundCan you listen out for the doorbell?

listen in (on/to something)

1 to listen to a conversation that you are not supposed to hearYou shouldn't listen in on other people's conversations.They did not know that the police were secretly listening in.2 to listen to a radio broadcast

listen up

(informal, especially North American English) used to tell people to listen carefully because you are going to say something important