expression
who cares?; I don't care; what does it matter?
A strong, dismissive rhetorical question expressing that the speaker does not care at all. Often used in casual or rough speech.
あんな奴の言うことなんて構うものか。
Who cares what a guy like that says?
失敗したって構うものか。またやればいい。
What does it matter if I failed? I can just try again.