(3) The plural is formed from the shortened root, and the stem ends in a long diphthong of which the last letter is i.
(4) The partitive plur. after this diphthong has the termination -ta, -tä.
(5) The second genitive plur. ends in -den (-tten).
This class is composed of what are called contracted nouns (rule [47]).
| Sing. | Plur. | |
|---|---|---|
| Nom. | uros | uroot |
| Part. | urosta | uroita |
| Gen. | uroon | urosten, uroiden, uroitten |
| In. | uroossa | uroissa |
| El. | uroosta | uroista |
| Il. | uroosen | uroihin, uroisin |
| Ad. | uroolla | uroilla |
| Abl. | uroolta | uroilta |
| All. | uroolle | uroille |
| Abes. | urootta | uroitta |
| Transl. | urooksi | uroiksi |
| Prol. | [urootse] | uroitse |
| Ess. | uroona or urosna | uroina |
| Com. | [uroone] | uroine |
| Instr. | [uroon] | uroin |
In poetry we also find a declension: uros, vieras, genitive urohon, vierahan, etc., illative urohosen, vierahasen, plur. urohot, vierahat, urohissa, vierahissa, etc., so that it is clear the roots are uroso, vierasa, being weakened.
Analogously are declined such words as terve, healthy, kevät, spring.
| Sing. | Plur. | |
|---|---|---|
| Nom. | terve | terveet |
| Part. | tervettä | terveitä |
| Gen. | terveen | tervetten, terveiden |
| Il. | terveesen | terveisin or terveihin |
| Sing. | Plur. | |
|---|---|---|
| Nom. | kevät | keväät |
| Part. | kevättä | keväitä |
| Gen. | kevään | kevätten, keväiden |
| Il. | kevääsen | keväisin, or keväihin |