forget it
Demain, elle se marie et me laisse tomber.
Tomorrow she's getting married and she's leaving me.
— Psychose (1960)
Forget it, he’s got nothing.
— Viens chez moi, j'habite chez une copine (1981)
C'est bizarre ça, t'imagines des trucs, laisse tomber.
That's weird—you’re imagining things. Never mind.
— La Cité des hommes (2007)