adjective

obsessive

obsessive

He has an obsessive personality.

He has an obsessive personality.

She is obsessive about cleanliness.

She is obsessive about cleanliness.

obsessive ((about sth.)) to be thinking about (sth.) too much She is obsessive about cleanliness.

Synonyms: compulsive, fixated; Antonyms: indifferent, casual

From Latin 'obsidere' (to besiege). The prefix 'ob-' (against) + 'sedere' (to sit). It literally means 'to sit against', implying occupying the mind.

Think of a thought that 'sits on' your mind and won't leave.

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