let slide

/L EH1 T S L AY0 D/
verb
  1. 1

    (idiomatic) To allow the condition of something to deteriorate due to negligence or apathy.

  2. 2

    (transitive, of intangibles) To let go; to allow; to release; to pass over without action.

  3. 3

    (transitive, of persons) To tolerate a violation of a norm from.

  4. 4

    To pass out of one's thought as not being of any consequence.

  5. 5

    Used other than figuratively or idiomatically: see let, slide.