口干舌燥

口乾舌燥
kǒugānshézào
lit. dry mouth and tongue (idiom); to talk too much

CEDICT

dry mouth and sore throat; having spoken so much that one's mouth and throat become thirsty

Wiktionary

嘴巴因缺乏水分而觉得乾燥口渴。如：「任凭他说得口乾舌燥，大家依然充耳不闻。」也作「口燥脣乾」。

重編國語辭典

Entry Composition

1 口干 kǒugān
  1. (pathology) dry mouth; xerostomia
  2. dry in the mouth
  3. dry mouth; xerostomia
2 舌 shé tongue
3 燥 zào
  1. dry; parched
  2. impatient; vexed
  3. (bound form) (Taiwan pr. sào) minced meat