きっぱり
きっぱり · kippari · JLPT N1 · adverb
clearly
Sharp 'kip' plus crisp 'pari' sounds like a clean snap, matching clear-cut, unambiguous speech
The double consonant ッ creates a sharp, abrupt break, and 'pari' has a crisp, clean ring. Together they mark speech or decisions that are direct and plainly stated.