Non, mais tu dis n'importe quoi, là ! - Come on, you're talking nonsense!
4. interj. nonsense!, rubbish!, hogwash!
French > French
n'importe quoi
1. n. Un objet ou une idée dont la précision importe peu et que l'on peut choisir librement.
2. n. Ce qui n'a pas beaucoup de sens, qui est absurde, futile ou incongru.
3. n-m. Fourre-tout.
Cette catégorie, c'est du grand n'importe quoi…
Analysis
ne
1. part. (literary) not (used alone to negate a verb; now chiefly with only a few particular verbs: see usage notes)
2. part. not, no (used before a verb, with a coordinating negative element usually following; see Usage Notes, below)
3. part. (Used in a subordinate clause before a subjunctive verb (especially when the main verb expresses doubt or fear), to provide extra overtones of doubt or uncertainty (but not negating its verb); the so-
4. part. In comparative clauses usually translated with the positive sense of the subsequent negative
Apprendre le français est plus facile qu'on ne pense. - Learning French is easier than you (might) think.
importe
1. v. first-person singular present of importer
2. v. third-person singular present of importer
3. v. second-person singular imperative of importer
importer
1. v. to import
2. v. (with à) to matter, to be relevant, important (to someone)