Possibly derived from onomatopoeic vauh, a wooshing sound. Related to Karelian vauhti and Votic vauhti.
vauhti
In everyday language, the words vauhti and nopeus are synonyms (as is the case with the English equivalents speed and velocity). In scientific use, they have however been redefined (as happened in English) to refer to the scalar and vector aspects of motion, respectively. So in science, vauhti only refers to a movement's magnitude (speed), whereas nopeus also includes information about a movement's direction.
In everyday language, vauhti is also used to refer to momentum.
| Inflection of vauhti (Kotus type 5*F/risti, t-d gradation) | ||||
|---|---|---|---|---|
| nominative | vauhti | vauhdit | ||
| genitive | vauhdin | vauhtien | ||
| partitive | vauhtia | vauhteja | ||
| illative | vauhtiin | vauhteihin | ||
| singular | plural | |||
| nominative | vauhti | vauhdit | ||
| accusative | nom. | vauhti | vauhdit | |
| gen. | vauhdin | |||
| genitive | vauhdin | vauhtien | ||
| partitive | vauhtia | vauhteja | ||
| inessive | vauhdissa | vauhdeissa | ||
| elative | vauhdista | vauhdeista | ||
| illative | vauhtiin | vauhteihin | ||
| adessive | vauhdilla | vauhdeilla | ||
| ablative | vauhdilta | vauhdeilta | ||
| allative | vauhdille | vauhdeille | ||
| essive | vauhtina | vauhteina | ||
| translative | vauhdiksi | vauhdeiksi | ||
| abessive | vauhditta | vauhdeitta | ||
| instructive | — | vauhdein | ||
| comitative | See the possessive forms below. | |||