Synonyms of 'bugbear'
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If something is anathema to you, you strongly dislike it.
Violence was anathema to them.
A bogey is something or someone that people are worried about, perhaps without much cause or reason.
Age is another bogey for actresses.
Thesaurus for bugbear from the Collins English Thesaurus
Something or someone that is your bugbear worries or upsets you.