noun which may take the genitive case particle 'no', na-adjective
nonstandard; out of spec; irregular
Used for things that do not meet a standard, specification, or norm. Often applied to products, sizes, or qualities. Can also describe unconventional relationships or ugly produce.
この部品は規格外なので使えません。
This part is out of spec, so we can't use it.
規格外の野菜は安く売られている。
Ugly vegetables are sold cheaply.
na-adjective, noun which may take the genitive case particle 'no'
exceptional; extraordinary; off the charts
Colloquial use, often as 規格外に, to describe something that exceeds normal bounds in a striking way, usually modifying traits like size, ability, or intensity.
彼の才能は規格外だ。
His talent is off the charts.
規格外に大きいケーキを焼いた。
I baked an extraordinarily large cake.
Antonym meaning 'within the standard' or 'conforming to specifications'.
Compound of 規格 (standard) + 外 (outside). The literal meaning 'outside the standard' extends to both technical nonconformity and colloquial extraordinariness.