Haihtuu

Haihtuu is the third-person singular present tense form of the Finnish verb haihtua, which means to evaporate, vanish, or fade away. The verb describes a process where a substance or phenomenon loses substance or presence, often due to heat, time, or dispersion. It is intransitive, typically not taking a direct object.

Common uses describe physical processes as well as metaphorical fading. For example, water evaporates in heat: Vesi haihtuu kuumuudessa. Mist dissolves as the day warms: Sumu haihtuu illalla. In a more figurative sense, memories or expectations can fade: Muistot haihtuvat vuosien kuluessa.

Haihtua belongs to the class of Finnish intransitive verbs that express changes of state or movement from a tangible to a less tangible condition. The form haihtuu is regular for the third-person singular present, and other forms follow standard Finnish conjugation patterns: haihtuivat (past), haihtuminen (noun form for evaporation), and haihtuva (adjective form meaning evaporating or fading).

In usage, haihtuu often appears in natural or observational contexts, describing processes observable in everyday life—such as liquids drying up, vapors dissipating, or fragrances fading. It can also appear in scientific or descriptive writing when noting phase changes, humidity effects, or the passage of time causing impressions to fade.

Overall, haihtuu conveys a sense of gradual disappearance or transformation, whether applied to physical substances, sensory experiences, or memories.