noun
charming person; lovable person; cute animal that everyone likes
Refers to a person or animal who is naturally endearing, wins affection easily, and is liked by everyone. Often used for someone with an amiable, disarming personality or a pet that is universally adored.
彼女はクラスの愛嬌者で、いつも笑顔を振りまいている。
She is the class charmer, always spreading smiles.
うちの猫は近所
Our cat is the neighborhood sweetheart and often gets petted during walks.
Compound of 愛嬌 (charm, amiability) + 者 (person). The exact historical derivation is uncertain, but the word transparently means 'a person of charm'.