jakkupaidan

Jakkupaidan is the genitive singular form of jakkupaita, a Finnish noun that refers to a jacket‑style shirt or blazer, depending on context. The base noun is a compound of jakku (blazer, jacket) and paita (shirt). In everyday Finnish, jakkupaita describes a tailored outer garment worn over a shirt, typically used in business or smart‑casual settings; usage varies in whether it denotes a separate garment or a style of jacket worn with a shirt.

Jakkupaidan, as the genitive, is used to show possession or association, for example: jakkupaidan väri (the color of the jacket shirt), jakkupaidan taskut (the pockets of the jacket shirt). Other cases include jakkupaidasta (from the jacket shirt) and jakkupaitaan (to the jacket shirt). The form is part of standard Finnish noun declension for nouns ending in -a.

In linguistic terms, jakkupaita is a compound noun formed from jakku and paita; jakkupaidan is simply its genitive, not a separate lexical item. The expression is primarily found in written Finnish to express ownership or relation to the garment.

See also: jakkupaita, jakku, paita. References: Finnish grammar resources on noun declension and compounding.