Used when someone's mistakes or flaws are acknowledged, to remind that everyone else makes mistakes and has flaws.

A form of thermally activated book binding with a flat glued spine, resembling a paperback.

Bound with a perfect binding.

plural of perfect binding

(colloquial) A crime that is undetected, unattributed to a perpetrator, or otherwise unsolved. / (colloquial) A crime that is unsolved and seemingly unsolvable.

plural of perfect crime

plural of perfect octave

(idiomatic) perfectly measured.

A musical interval of the Western twelve-semitone system consisting of five semitones and spanning four degrees of the diatonic scale. It is enharmonically equivalent to an augmented third.

plural of perfect fourth