chime up

nonstandard

(nonstandard) To speak suddenly; to make an unexpected contribution to a conversation.

Japanese Meaning

突然口をはさむ、または予期せぬ形で会話に参加する

I didn't expect Mark to chime up during the meeting and offer his opinion.

会議中にマークが突然口を挟んで意見を述べるとは思わなかった。

Sense（1）

(nonstandard) To speak suddenly; to make an unexpected contribution to a conversation.

chimes up

（ present singular third-person ）

chiming up

（ participle present ）

chimed up

（ participle past ）

chimed up

（ past ）