Miss by a mile and Slip-up

Slip-up and miss by a mile are semantically related. In some cases you can replace phrase "Slip-up" with "Miss by a mile", this phrases are similar.

Slip-up noun - A minor inadvertent mistake usually observed in speech or writing or in small accidents or memory lapses etc..

Miss by a mile and slip-up are semantically related. Sometimes you can use "Miss by a mile" instead a verb phrase "Slip-up".