A - (also a contraction of Ga...; e.g. "Gallt" becomes "Allt" in "Alltwen")
Word element
| Meaning | Example of use (sound file links underlined) |
| aber | estuary, confluence | Aberaeron |
| Aeron | river in Cardiganshire | Aberaeron |
| afon | river | Glanafon |
| allt | hill, hillside, slope, wood (see gallt) | Alltwen |
| Aman | river in Carmarthenshire | Cwmaman |
| ar | on, upon, over, by | Pontardawe |
| Aran | name of mountain | |
| Armon | see Garmon | |
| arth | see garth | |
| arw | rough (see garw) | Graig-arw |
| aur | gold | |
| awel, (plural awelon) | breeze | Brynawel |
E - (also a contraction of Ge...; e.g. "gefail" becomes "efail" in "Tonyrefail")
Word element
| Meaning | Example of use (sound file links underlined) |
| Edw | river in Radnorshire | Aberedw |
| efail, (contraction of gefail) | smithy | Tonyrefail |
| eglwys | church | Eglwyswrw |
| eifl | forked peak | |
| einion; Einion | anvil; also person's name | |
| Einon | person's name | |
| eira | snow | |
| eithin | furze, gorse | Cefneithin |
| Elan | river in Radnorshire, etc. | |
| Emlyn | person's name | |
| Emrys | person's name | |
| eos | nightingale | |
| eryr | eagle | |
| esgair | long ridge | |
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