benefits /ˈbɛn.ɪ.fɪts/noun 1phrases 2 noun1 •public assistance; welfare.Her dad had been on benefits for years so she never ever received pocket money. When she walked to school she would scour the pavements for coins. — 2012 Phrases with benefits friend with benefitsA friend with whom one has a casual sexual relationship. friendship with benefitsA platonic friendship where the partners engage in sexual activities, but do not consider themselves a couple.