徑自

径自
jìngzì
  1. without leave
  2. without consulting anyone

CEDICT

on one's own; without consulting anyone

Wiktionary

直接行動。如：「他話也不說，徑自轉頭就走。」也作「逕自」。

重編國語辭典

Entry Composition

1 徑 jìng
  1. footpath
  2. track
  3. diameter
  4. straight
  5. directly
2 自 zì
  1. (bound form) self; oneself
  2. from; since
  3. naturally; as a matter of course