laisser tomber bedeutet auf Englisch

drop [dropped, dropping, drops]▼◼◼◼(to let (something) fall; to allow (something) to fall (either by releasing hold of, or losing one's grip on))
verb
[UK: drɒp] [US: ˈdrɑːp]

down [downed, downing, downs]▼◼◼◼(to drop)
verb
[UK: daʊn] [US: ˈdaʊn]

let go▼◼◼◻(to emotionally disengage or to distract oneself from a situation)
verb
[UK: let ɡəʊ] [US: ˈlet ˈɡoʊ]

ditch [ditched, ditching, ditches]▼◼◼◻(to abandon)
verb
[UK: dɪtʃ] [US: ˈdɪtʃ]

let down▼◼◼◻(to disappoint)
verb
[UK: let daʊn] [US: ˈlet ˈdaʊn]

fold [folded, folding, folds]▼◼◻◻(give way on a point or in an argument)
verb
[UK: fəʊld] [US: foʊld]

chicken out▼(shy away from a daring task)
verb

bilk [bilked, bilking, bilks]▼(defraud, cheat)
verb
[UK: bɪlk] [US: ˈbɪlk]

drop like a bad habit▼verb