不自量

bùzìliàng
  1. not take a proper measure of oneself
  2. to overrate one's own abilities

CEDICT

to not take a proper measure of oneself; to overrate one's own abilities

Wiktionary

过度的高估自己，没有衡量自己的力量。

重編國語辭典

Entry Composition

1 不 bù
  1. no; not so
  2. (bound form) not; un-
2 自量 zìliàng to estimate one's own ability or strength

Containing this entry

不自量力 bùzìliànglì (idiom) to overestimate one's capabilities