noun, noun or participle which takes 'suru', intransitive verb
attachment; fixation; obsession; clinging
Describes a strong emotional or mental attachment to something, often with a negative nuance of being unable to let go. Commonly used with ～する to mean 'to be attached/obsessed'.
He clings to the old ways.
お金に執着しすぎると、人生がつまらなくなる。
If you become too obsessed with money, life becomes dull.
彼女は過去の失敗に執着して、前に進めないでいる。
She is fixated on her past mistakes and can't move forward.
Rarely used kanji form; 着 is the modern standard.