2VERB 笨嘴拙舌地说话;结结巴巴地说话 When you are trying to say something, if you fumble for the right words, you speak in a clumsy and unclear way. 笨嘴拙舌地说话;结结巴巴地说话 [Also VERB]
I fumbled for something to say. [VERB + for]
我磕磕巴巴地想说点儿什么。
He fumbled his lines, not knowing what he was going to say. [VERB noun]