From Middle Welsh dileu, from Proto-Brythonic *dileɣọd, from Proto-Celtic *dīlegeti (“to destroy”); cognate with Old Irish do·lega. Sense influenced by Latin dēleō, dēlētus and its descendants.
dileu (first-person singular present dileaf)
| singular | plural | impersonal | ||||||
|---|---|---|---|---|---|---|---|---|
| first | second | third | first | second | third | |||
| present indicative/future | dileaf | dilei | dilea | dilëwn | dilëwch | dileant | dilëir | |
| imperfect (indicative/subjunctive)/conditional | dilëwn | dileit | dileai | dileem | dileech | dileent | dilëid | |
| preterite | dileais | dileaist | dileodd | dileasom | dileasoch | dileasant | dilëwyd | |
| pluperfect | dileaswn | dileasit | dileasai | dileasem | dileasech | dileasent | dileasid, dileesid | |
| present subjunctive | dilëwyf | dileych | dileo | dileom | dileoch | dileont | dileer | |
| imperative | — | dilea | dileed | dilëwn | dilëwch | dileent | dileer | |
| verbal noun | dileu | |||||||
| verbal adjectives | dileedig dileadwy | |||||||
| Inflected colloquial forms | singular | plural | ||||
|---|---|---|---|---|---|---|
| first | second | third | first | second | third | |
| future | dilea i, dileaf i | dilei di | dileith o/e/hi, dileiff e/hi | dilewn ni | dilewch chi | dilean nhw |
| conditional | dilewn i, dileswn i | dileet ti, dileset ti | dileai fo/fe/hi, dilesai fo/fe/hi | dileen ni, dilesen ni | dileech chi, dilesech chi | dileen nhw, dilesen nhw |
| preterite | dileais i, dilees i | dileaist ti, dileest ti | dileodd o/e/hi | dileon ni | dileoch chi | dileon nhw |
| imperative | — | dilea | — | — | dilewch | — |
| Note: All other forms are periphrastic, as usual in colloquial Welsh. | ||||||