如廁

如厕
rúcè
to go to the toilet

CEDICT

  1. (formal) to use the toilet; to go to the toilet
  2. to use the toilet; to go to the toilet

Wiktionary

上廁所。

重編國語辭典

上廁所

維基詞典

Entry Composition

1 如 rú
  1. as
  2. as if
  3. such as
2 廁 cè
  1. (bound form) restroom; toilet; lavatory
  2. (literary) to be mingled with; to be involved in

Related entries

撇條 piětiáo (slang) to go to the toilet
出恭 chūgōng
  1. to defecate (euphemism)
  2. to go to the toilet
更衣 gēngyī
  1. to change clothes
  2. to go to the toilet (euphemism)
洗手 xǐshǒu
  1. to wash one's hands
  2. to go to the toilet
飯前洗手

Wash your hands before each meal.

Source: Tatoeba

淨手 jìngshǒu
  1. to wash one's hands
  2. (fig.) to go to the toilet