唾

Idiomatic expression

to keep one's wit about one; to be on one's guard; to be wary; to keep on one's toes

Proverb

words once spoken cannot be taken back

sputum; phlegm

Idiomatic expression; Su verb - precursor to the modern suru

to harm oneself as a result of trying to harm someone else; to cut off one's nose to spite one's face; to look up at the sky and spit