Perhaps from an earlier form *sōd-, from Proto-Indo-European *sed- (“to sit”), whence eistedd (“to sit”); compare English soot. Alternatively, the earlier form is *stā-dh-, from Proto-Indo-European *steh₂- (“to stand”), whence sefyll (“to stand, stop”).
soddi (first-person singular present soddaf, not mutable)
| singular | plural | impersonal | ||||||
|---|---|---|---|---|---|---|---|---|
| first | second | third | first | second | third | |||
| present indicative/future | soddaf | soddi | sawdd, sodda | soddwn | soddwch | soddant | soddir | |
| imperfect (indicative/subjunctive)/ conditional |
soddwn | soddit | soddai | soddem | soddech | soddent | soddid | |
| preterite | soddais | soddaist | soddodd | soddasom | soddasoch | soddasant | soddwyd | |
| pluperfect | soddaswn | soddasit | soddasai | soddasem | soddasech | soddasent | soddasid, soddesid | |
| present subjunctive | soddwyf | soddych | soddo | soddom | soddoch | soddont | sodder | |
| imperative | — | sodda | sodded | soddwn | soddwch | soddent | sodder | |
| verbal noun | soddi | |||||||
| verbal adjectives | soddedig soddadwy | |||||||
| Inflected colloquial forms | singular | plural | ||||
|---|---|---|---|---|---|---|
| first | second | third | first | second | third | |
| future | sodda i, soddaf i | soddi di | soddith o/e/hi, soddiff e/hi | soddwn ni | soddwch chi | soddan nhw |
| conditional | soddwn i, soddswn i | soddet ti, soddset ti | soddai fo/fe/hi, soddsai fo/fe/hi | sodden ni, soddsen ni | soddech chi, soddsech chi | sodden nhw, soddsen nhw |
| preterite | soddais i, soddes i | soddaist ti, soddest ti | soddodd o/e/hi | soddon ni | soddoch chi | soddon nhw |
| imperative | — | sodda | — | — | soddwch | — |
| Note: All other forms are periphrastic, as usual in colloquial Welsh. | ||||||