Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb beat-up

2 senses of beat up

Sense 1
beat, beat up, work over -- (give a beating to; subject to a beating, either as a punishment or as an act of aggression; "Thugs beat him up when he walked down the street late at night"; "The teacher used to beat the students")

Sense 2
beat up, drum up, rally -- (gather; "drum up support")
       => collect, pull in -- (get or bring together; "accumulate evidence")

Antonyms of adj beaten-up

1 sense of beaten-up

Sense 1
battered, beat-up, beaten-up -- (damaged by blows or hard usage; "a battered old car"; "the beaten-up old Ford")

INDIRECT (VIA damaged) -> undamaged -- (not harmed or spoiled; sound)

Similarity of adj beaten-up

1 sense of beaten-up

Sense 1
battered, beat-up, beaten-up -- (damaged by blows or hard usage; "a battered old car"; "the beaten-up old Ford")
       => damaged (vs. undamaged) -- (harmed or injured or spoiled; "I won't buy damaged goods"; "the storm left a wake of badly damaged buildings")