go back on
US /ɡoʊ bæk ɑːn/
UK /ɡoʊ bæk ɑːn/

1.
mungkir janji, menarik balik
fail to keep a promise or agreement
:
•
He promised to help me, but he went back on his word.
Dia berjanji untuk membantu saya, tetapi dia mungkir janji.
•
You can't just go back on our agreement now.
Anda tidak boleh mungkir janji kita sekarang.