külmetunud
Külmetunud is an Estonian adjective formed from the verb külmetuma, meaning to catch a cold or to become cold. It denotes a state resulting from exposure to cold, typically either illness (having caught a common cold) or a feeling of being very cold. In everyday use it most often describes a person who is sick with a cold, for example: Ma olen külmetunud.
In grammar, külmetunud is a past participle that agrees with the noun it modifies and is used
Distinguishing it from külmunud is important. Külmunud means frozen or solidly chilled, usually referring to objects
Etymology traces külmetunud to the verb külmetuma with the past participle suffix, signaling a resulting state