She tried to voice them herself, but her lips were quivering too much.

He was standing close by the window and his lips were quivering.

But when she spoke her lips quivered, and they came.

His lips quivered while he looked straight into my eyes.

Her lower lip quivered and she looked up at him.

Her lips quivered, and she bit down on the bottom one hard.

Her lip quivered as if she wanted to say something but couldn't.

He didn't answer and I saw his lips quiver slightly.

The mouth went down again, and the lower lip quivered.

At last it began to hurt, and her lips quivered.