(especially of a young child) to cry continuously but not very loudly, or to complain all the time

The baby was cutting a tooth and grizzled all day long. 这个婴儿正在出牙，所以一天到晚呜呜哭。

They're always grizzling (= complaining) about how nobody invites them anywhere. 他们老是抱怨从来没人邀请他们去作客。