From gwrth- (“anti-, contra-”) + cyferbynnu (“to contrast, to oppose”).
gwrthgyferbynnu (first-person singular present gwrthgyferbynnaf)
| Inflected colloquial forms | singular | plural | ||||
|---|---|---|---|---|---|---|
| first | second | third | first | second | third | |
| future | gwrthgyferbynna i, gwrthgyferbynnaf i | gwrthgyferbynni di | gwrthgyferbynnith o/e/hi, gwrthgyferbynniff e/hi | gwrthgyferbynnwn ni | gwrthgyferbynnwch chi | gwrthgyferbynnan nhw |
| conditional | gwrthgyferbynnwn i, gwrthgyferbynnswn i | gwrthgyferbynnet ti, gwrthgyferbynnset ti | gwrthgyferbynnai fo/fe/hi, gwrthgyferbynnsai fo/fe/hi | gwrthgyferbynnen ni, gwrthgyferbynnsen ni | gwrthgyferbynnech chi, gwrthgyferbynnsech chi | gwrthgyferbynnen nhw, gwrthgyferbynnsen nhw |
| preterite | gwrthgyferbynnais i, gwrthgyferbynnes i | gwrthgyferbynnaist ti, gwrthgyferbynnest ti | gwrthgyferbynnodd o/e/hi | gwrthgyferbynnon ni | gwrthgyferbynnoch chi | gwrthgyferbynnon nhw |
| imperative | — | gwrthgyferbynna | — | — | gwrthgyferbynnwch | — |
| Note: All other forms are periphrastic, as usual in colloquial Welsh. | ||||||
| Welsh mutation | |||
|---|---|---|---|
| radical | soft | nasal | aspirate |
| gwrthgyferbynnu | wrthgyferbynnu | ngwrthgyferbynnu | unchanged |
| Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs. | |||