Definition of back out in English:

back out

Withdraw from a commitment: if he backs out of the deal they’ll sue him
More example sentences
  • The excitement would die down soon enough, and the school would retreat back out of the public eye.
  • The doctor backed out of his contractual responsibility to provide out of hours care for his patients.
  • No one wants to absorb the cost if someone in a group backs out.
Synonyms
renege on, go back on, withdraw from, pull out of, retreat from, fail to honour, abandon, default on, repudiate;
informal get cold feet about, chicken out of
See parent entry: back

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Pronunciation: ˌəʊlɪˈadʒɪnəs
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rich in, covered with, or producing oil; oily