口诛笔伐

kǒu zhū bǐ fá

to condemn in speech and in writing (idiom)

to denounce by word and pen

口

kǒu

mouth

诛

zhū

to put (a criminal) to death

笔

bǐ

writing brush; writing implement (pen, pencil etc) (CL:支[zhi1],枝[zhi1])

伐

fá

to cut down