fān​liǎn​bù​rèn​rén

to turn against a friend

Senses

翻脸不认人/ 翻臉不認人 fān​liǎn​bù​rèn​rén (also fān​liǎn​bú​rèn​rén) to turn against a friend

to fall out with someone and become hostile suddenly; to turn one's back on a person and ignore former friendship or ties

References

see 翻脸不认人/翻臉不認人 翻脸/翻臉