no objectTo express too much emotion, especially (in a dramatic or musical performance) so as to be unconvincing; to behave in an overemotional manner.
Origin
Early 20th century; earliest use found in The Decatur Review. From over- + emote.
Definition of over-emote in US English:
over-emote
verbˌəʊv(ə)rɪˈməʊt
no objectTo express too much emotion, especially (in a dramatic or musical performance) so as to be unconvincing; to behave in an overemotional manner.
Origin
Early 20th century; earliest use found in The Decatur Review. From over- + emote.