What? What did you say?

Nothing

what / that thing (used in place of words you can't remember at the moment.)

What?, Huh?

resolute, firm, undaunted

resolutely, firmly

割れる: break

Alternative form of 割れる

Alternative spelling of 割れる

(adverbial particle, dismissive, derogatory) emphasizes disgust, contempt, or otherwise negative feelings of the speaker: whatever