go back on
• fail to keep a promise.
• "he wouldn't go back on his word"
Similar:
renege on,
break,
fail to honour,
default on,
backtrack on,
back out of,
repudiate,
retract,
go back on one's word,
break one's word,
break one's promise,
do an about-face,
cop out (of),
rat on,
