weasel out (ofsth)
—phrasal verbwithweaselverbuk/ˈwiː.zəl/us/ˈwiː.zəl/
mainlyUSinformaltoavoiddoing something that you haveagreedto do,especiallyby beingdishonest
（尤指不诚实地）推诿，逃避（答应过的事）
Although they hadsignedthecontracttheytriedtoweaselout of thedeallater.尽管他们已经签了合同，但事后却试图逃避这笔买卖。