From mets + -is. Compare Finnish metso and Ingrian metsoi. Alternatively a derivation from mõtus, reanalysed as a derivation of mets.
metsis (genitive metsise, partitive metsist)
| Declension of metsis (ÕS type 9/katus, no gradation) | |||
|---|---|---|---|
| singular | plural | ||
| nominative | metsis | metsised | |
| accusative | nom. | ||
| gen. | metsise | ||
| genitive | metsiste | ||
| partitive | metsist | metsiseid | |
| illative | metsisesse | metsistesse metsiseisse | |
| inessive | metsises | metsistes metsiseis | |
| elative | metsisest | metsistest metsiseist | |
| allative | metsisele | metsistele metsiseile | |
| adessive | metsisel | metsistel metsiseil | |
| ablative | metsiselt | metsistelt metsiseilt | |
| translative | metsiseks | metsisteks metsiseiks | |
| terminative | metsiseni | metsisteni | |
| essive | metsisena | metsistena | |
| abessive | metsiseta | metsisteta | |
| comitative | metsisega | metsistega | |