expression
unavoidable; inevitable; can't be helped
Fixed expression meaning a situation cannot be avoided or escaped; often used in the phrase のっぴきならない事情 (unavoidable circumstances).
See also: 退っ引きならない
のっぴきならない事情で欠席します。
I will be absent due to unavoidable circumstances.
彼はのっぴきならぬ立場に追い込まれた。
He was driven into an unavoidable position.