Fromcais(“attempt, effort, endeavour”,noun) +-io.
ceisio (first-person singular presentceisiaf)(ambitransitive)
| singular | plural | impersonal | ||||||
|---|---|---|---|---|---|---|---|---|
| first | second | third | first | second | third | |||
| present indicative/future | ceisiaf | ceisi | cais,ceisia | ceisiwn | ceisiwch | ceisiant | ceisir | |
| imperfect (indicative/subjunctive)/conditional | ceisiwn | ceisit | ceisiai | ceisiem | ceisiech | ceisient | ceisid | |
| preterite | ceisiais | ceisiaist | ceisiodd | ceisiasom | ceisiasoch | ceisiasant | ceisiwyd | |
| pluperfect | ceisiaswn | ceisiasit | ceisiasai | ceisiasem | ceisiasech | ceisiasent | ceisiasid,ceisiesid | |
| present subjunctive | ceisiwyf | ceisiech | ceisio | ceisiom | ceisioch | ceisiont | ceisier | |
| imperative | — | ceisia | ceisied | ceisiwn | ceisiwch | ceisient | ceisier | |
| verbal noun | ceisio | |||||||
| verbal adjectives | ceisiedig ceisiadwy | |||||||
| inflected colloquial forms | singular | plural | ||||
|---|---|---|---|---|---|---|
| first | second | third | first | second | third | |
| future | ceisia i, ceisiaf i | ceisi di | ceisith o/e/hi, ceisiff e/hi | ceisiwn ni | ceisiwch chi | ceisian nhw |
| conditional | ceisiwn i | ceisiet ti | ceisiai fo/fe/hi | ceisien ni | ceisiech chi | ceisien nhw |
| preterite | ceisiais i, ceisies i | ceisiaist ti, ceisiest ti | ceisiodd o/e/hi | ceision ni | ceisioch chi | ceision nhw |
| imperative | — | ceisia | — | — | ceisiwch | — |
| radical | soft | nasal | aspirate |
|---|---|---|---|
| ceisio | geisio | ngheisio | cheisio |
Note: Certain mutated forms of some words can never occur in standard Welsh.
All possible mutated forms are displayed for convenience.