何を
Meanings
Interjection
1. what?
Adverb
2. for what (reason; cause; thing); why
Kanji used
Composed of
何
what; you-know-what; that thing; whatsit; whachamacallit; what's-his-name; what's-her-name; (not) at all; (not) in the slightest; what?; …
Pronoun
を
indicates direct object of action; indicates subject of causative expression; indicates an area traversed; indicates time (period) over which action takes place; indicates point of departure or separation of action; indicates object of desire, like, hate, etc.
Particle