Nominal Forms
Verb noun:
deddfu
Verbal adjectives:
deddfedig; deddfadwy
Indicative
Present / Future
| Sg.1 | deddfaf |
| Sg.2 | deddfi |
| Sg.3 | deddfa |
| Pl.1 | deddfwn |
| Pl.2 | deddfwch |
| Pl.3 | deddfant |
| Impersonal | deddfir |
Preterite
| Sg.1 | deddfais |
| Sg.2 | deddfaist |
| Sg.3 | deddfodd |
| Pl.1 | deddfasom |
| Pl.2 | deddfasoch |
| Pl.3 | deddfasant |
| Impersonal | deddfwyd |
Pluperfect
| Sg.1 | deddfaswn |
| Sg.2 | deddfasit |
| Sg.3 | deddfasai |
| Pl.1 | deddfasem |
| Pl.2 | deddfasech |
| Pl.3 | deddfasent |
| Impersonal | deddfasid; deddfesid |
Imperfect (Indicative/Subjunctive)
| Sg.1 | deddfwn |
| Sg.2 | deddfit |
| Sg.3 | deddfai |
| Pl.1 | deddfem |
| Pl.2 | deddfech |
| Pl.3 | deddfent |
| Impersonal | deddfid |
Subjunctive
Present
| Sg.1 | deddfwyf |
| Sg.2 | deddfych |
| Sg.3 | deddfo |
| Pl.1 | deddfom |
| Pl.2 | deddfoch |
| Pl.3 | deddfont |
| Impersonal | deddfer |
Imperative
| Sg.2 | deddfa |
| Sg.3 | deddfed |
| Pl.1 | deddfwn |
| Pl.2 | deddfwch |
| Pl.3 | deddfent |
| Impersonal | deddfer |
Colloquial Forms
Future
| Sg.1 | deddfa i; deddfaf i |
| Sg.2 | deddfi di |
| Sg.3 | deddfith o; deddfiff e |
| Pl.1 | deddfwn ni |
| Pl.2 | deddfwch chi |
| Pl.3 | deddfan nhw |
Preterite
| Sg.1 | deddfais i; deddfes i |
| Sg.2 | deddfaist ti; deddfest ti |
| Sg.3 | deddfodd o |
| Pl.1 | deddfon ni |
| Pl.2 | deddfoch chi |
| Pl.3 | deddfon nhw |
Conditional
| Sg.1 | deddfwn i; deddfswn i |
| Sg.2 | deddfet ti; deddfset ti |
| Sg.3 | deddfai fo; deddfsai fo |
| Pl.1 | deddfen ni; deddfsen ni |
| Pl.2 | deddfech chi; deddfsech chi |
| Pl.3 | deddfen nhw; deddfsen nhw |
Verbs conjugated like 'deddfu'
adnewyddu,
sathru,
saethu,
arbelydru,
gwrthwynebu,
pelydru,
merthyru,
datgelu,
sefydlu,
addunedu,
disbyddu,
dadocsigenu,
trafferthu,
atgenhedlu,
diogelu,
diddymu,
dirmygu,
efengylu,
gwanychu,
cenhedlu, etc. (List truncated at 20 verbs)
Verbs similar to 'deddfu'
lleddfu,
meddu,
aeddfedu,
baeddu,
dadlau,
diddanu,
diddyfnu,
diddymu,
dyddio,
maeddu,
Translations
Etymology
From deddf + -u.
Additional Information