Synonyms for listen:
Sense 1 (noun)
hear and pay attention (verb)
hear out, overhear, hone in on, get with, hear from.
Other synonyms and related words:
get wind, get a line, find out, consider, beware, listener, take heed, discover, concentrate, list, track, hear out, tune in, focus, listen in, observe, hearken, learn, overhear, look out, get word, see, mind, heed, follow, try, take care, bear in mind, attend, catch, hark, harken, eavesdrop.