What are synonyms of listened?

Here are some synonyms for "listened," depending on the context and nuance you want to convey:

General:

* Heard

* Attended

* Paid attention

* Took notice

* Heeded

* Observed

Emphasizing careful attention:

* Earshot

* Attentively listened

* Hung on every word

* Took in

* Absorbed

* Caught

Emphasizing passive listening:

* Overheard

* Caught wind of

* Eavesdropped

Emphasizing a specific reaction:

* Responded

* Reacted

* Complied

* Obeyed

Informal:

* Tuned in

* Pricked up ears

* Got the lowdown

* Caught on

The best synonym for you will depend on the specific situation you're describing.