kǒu​bù​zé​yán

ramble

口不择言 (口不擇言) kǒu​bù​zé​yán
ramble
to speak incoherently or without logical order, especially when confused or panicked
speak rashly idiom
to speak without thinking or considering the consequences, often saying inappropriate things due to strong emotion

Frequency

Written text
0.223 per million

Sources

Definitions
CC-CEDICT
Frequency data
BCC Corpus (BLCU)