Tā de zuǐchún wēiwēi de rú le yīxià, què méi shuō chū huà lái.
His lips twitched faintly, but no words came out.
Tips
memory
The radical 虫 (chóng, insect/worm) signals the meaning, while 需 gives the sound. Most commonly seen in the compound 蠕动 (rúdòng, to wriggle / peristalsis).