勝手知ったる

かってしったるkatteshittaru

expression · noun or verb acting prenominally

  1. well aware of
  2. know thoroughly
  3. being familiar with (and thus feeling no need for restraint)

Kanji in this word

Study it in Yanamino

Data from JMdict, KANJIDIC2 (EDRDG), KanjiVG, CC-CEDICT and Make Me a Hanzi. Sources and licences