adverb
unintentionally; without meaning to; against one's better judgment
Expresses doing something one knows one shouldn't, often due to habit or weakness. Similar to つい but with a stronger sense of self-reproach or repeated failure.
See also: つい
ダイエット中なのに、ついつい甘いものを食べてしまう。
Even though I'm on a diet, I end up eating sweets without meaning to.
仕
I find myself unconsciously checking my phone during work.