Definition of Anathema: Anathema (noun): Something or someone that one vehemently dislikes; a formal curse by a religious authority, excommunicating a person or denouncing a doctrine. Synonyms: abomination, outrage, disgrace, pariah Antonyms: blessing, praise, approval, favorite Memory Tip: Think of “anathema” as something so disliked or hated that it’s almost like a curse, like someone…