noun

obsession

obsession, fixation, preoccupation

Her obsession with cleanliness is extreme.

Her obsession with cleanliness is extreme.

He has an obsession with collecting stamps.

He has an obsession with collecting stamps.

an obsession with ((sth.)) a state of being obsessed with (sth.) He has an obsession with collecting stamps.

Synonyms: fixation, preoccupation, compulsion

From Latin 'obsessio' (a siege), from 'obsidere' (to besiege). 'ob-' (against) + 'sedere' (to sit).

This is the noun form of 'obsess'. It's an idea or feeling that 'sits on' your mind.

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