Sumuuntunut

Sumuuntunut is a Finnish adjective formed from the verb sumuuntua, meaning to fog up or become clouded. The past participle sumuuntunut is used to describe something that has become foggy or obscured, often referring to surfaces but also usable in a figurative sense.

Etymology and form: The noun sumu means fog. By adding the verb suffix -untua to sumu, Finnish creates the verb sumuuntua (to fog up / to become foggy). The resulting past participle sumuuntunut functions as an adjective that designates the resulting state, for example after condensation or steam has settled on a surface.

Usage: Sumuuntunut is common in everyday descriptions of weathered surfaces such as windows, glasses, or camera lenses. Examples include ikkunan pinta on sumuuntunut (the window pane has fogged up) and silmälasit ovat sumuuntuneet (the glasses have fogged up). Metaphorically, it can describe a mental state, as in mieli on sumuuntunut (the mind is clouded).

Relation to related terms: The related noun is sumu (fog), and the verb is sumuuntua (to fog up / to become foggy). As an adjective, sumuuntunut typically agrees with the noun it modifies in number and case, much like other Finnish participial adjectives.

See also: fog, mist, Finnish phonology and morphology, Finnish weather terminology. The term is primarily used in Finnish-language contexts and is understood by speakers as indicating reduced visibility or clarity, whether physically or metaphorically.