Meaning of obsession means a steady aggravating distraction with a regularly nonsensical thought or feeling; comprehensively called convincing inspiration or something that causes a fixation.

Meaning of obsession for English Language Learners

: a state in which somebody ponders somebody or something continually or much of the time particularly in a way that is not ordinary

: somebody or something that a man ponders continually or much of the time

: a movement that somebody is exceptionally inspired by or invests a great deal of energy doing

Medicinal Definition of obsession

: a relentless irritating distraction with a frequently absurd thought or feeling; additionally : something that causes such distraction—think about impulse, fear

Examples of obsession in a sentence

He was entranced by the performing artist and following everything she might do had turned into a fixation.

She has a fixation on cleanliness.

Her worry about cleanliness approaches the level of fixation.

Cash has turned into a fixation for him.