terh- + -akka, from the same root as dialectal terho (“vigour”). The root might be related to terve or terä.[1]
terhakka (comparative terhakampi, superlative terhakin or terhakoin)
| Inflection of terhakka (Kotus type 14*A/solakka, kk-k gradation) | |||
|---|---|---|---|
| nominative | terhakka | terhakat | |
| genitive | terhakan | terhakoiden terhakoitten terhakkojen | |
| partitive | terhakkaa | terhakoita terhakkoja | |
| illative | terhakkaan | terhakoihin terhakkoihin | |
| singular | plural | ||
| nominative | terhakka | terhakat | |
| accusative | nom. | terhakka | terhakat |
| gen. | terhakan | ||
| genitive | terhakan | terhakoiden terhakoitten terhakkojen terhakkain rare | |
| partitive | terhakkaa | terhakoita terhakkoja | |
| inessive | terhakassa | terhakoissa | |
| elative | terhakasta | terhakoista | |
| illative | terhakkaan | terhakoihin terhakkoihin | |
| adessive | terhakalla | terhakoilla | |
| ablative | terhakalta | terhakoilta | |
| allative | terhakalle | terhakoille | |
| essive | terhakkana | terhakkoina | |
| translative | terhakaksi | terhakoiksi | |
| abessive | terhakatta | terhakoitta | |
| instructive | — | terhakoin | |
| comitative | — | terhakkoine | |