(idiomatic, informal) To listen closely; to pay attention.

To take an interest in.

Third-person singular simple present indicative form of listen up

simple past tense and past participle of listen up

(intransitive or transitive with to) To listen; to try to hear.

(intransitive or transitive with to) To listen; to try to hear.

Feelings of tiredness, discomfort and loss of sensitivity after prolonged exposure to an auditory stimulus such as music or industrial noises.

(figuratively) To listen distractedly, without paying attention.