From Proto-Celtic *exs-dī-sedeti, the root of which is from Proto-Indo-European *sed- (“sit”).
eistedd (first-person singular present eisteddaf)
singular | plural | impersonal | ||||||
---|---|---|---|---|---|---|---|---|
first | second | third | first | second | third | |||
present indicative/future | eisteddaf | eisteddi | eistedda | eisteddwn | eisteddwch | eisteddant | eisteddir | |
imperfect (indicative/subjunctive)/ conditional |
eisteddwn | eisteddit | eisteddai | eisteddem | eisteddech | eisteddent | eisteddid | |
preterite | eisteddais | eisteddaist | eisteddodd | eisteddasom | eisteddasoch | eisteddasant | eisteddwyd | |
pluperfect | eisteddaswn | eisteddasit | eisteddasai | eisteddasem | eisteddasech | eisteddasent | eisteddasid, eisteddesid | |
present subjunctive | eisteddwyf | eisteddych | eisteddo | eisteddom | eisteddoch | eisteddont | eistedder | |
imperative | — | eistedda | eistedded | eisteddwn | eisteddwch | eisteddent | eistedder | |
verbal noun | eistedd | |||||||
verbal adjectives | eisteddedig |
Inflected colloquial forms | singular | plural | ||||
---|---|---|---|---|---|---|
first | second | third | first | second | third | |
future | eistedda i, eisteddaf i | eisteddi di | eisteddith o/e/hi, eisteddiff e/hi | eisteddwn ni | eisteddwch chi | eisteddan nhw |
conditional | eisteddwn i, eisteddswn i | eisteddet ti, eisteddset ti | eisteddai fo/fe/hi, eisteddsai fo/fe/hi | eistedden ni, eisteddsen ni | eisteddech chi, eisteddsech chi | eistedden nhw, eisteddsen nhw |
preterite | eisteddais i, eisteddes i | eisteddaist ti, eisteddest ti | eisteddodd o/e/hi | eisteddon ni | eisteddoch chi | eisteddon nhw |
imperative | — | eistedda | — | — | eisteddwch | — |
Note: All other forms are periphrastic, as usual in colloquial Welsh. |
radical | soft | nasal | h-prothesis |
---|---|---|---|
eistedd | unchanged | unchanged | heistedd |
Note: Certain mutated forms of some words can never occur in standard Welsh.
All possible mutated forms are displayed for convenience.