hiddenhabit
nounUK /ˈhɪdən ˈhæbɪt/
US /ˈhɪdən ˈhæbɪt/
A hidden habit is something you do again and again without noticing it.
Biting his nails was a hidden habit he never talked about.
OTHER MEANINGS
2. A repeated action that is kept out of sight from other people.
Her hidden habit of humming while she worked went unnoticed by everyone.
3. A pattern of behavior that a person does not realize they have.
Checking the door twice was a hidden habit he only discovered when a friend pointed it out.
4. A small, secret way of doing something that brings comfort.
Keeping a lucky stone in his pocket was a hidden habit he relied on before tests.