Obsess
/əˈbsɛs/
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Definition
(verb) To be preoccupied with a single topic or emotion.
Sentence Examples
Everybody blows it once in a while. It's better not to obsess on it.
Don't obsess over numbers. Numerology is nothing more than pseudoscience.
CEFR Practice Quiz
It is unhealthy to ____ over minor mistakes instead of focusing on how to improve in the future.