blas.← Celtic Place-Name Explainer
Welsh · Cymraeg
Caerdydd
/kairˈdiːð/
Anglicised as Cardiff
Place-name meaning, origin and pronunciation
“fort on the Taff” — the Roman fort beside the River Taf.
Broken down
Caer
caer
↓
fort
Welsh for a fortified town (cf. Caernarfon, Caerffili).
-dydd
from Taf (river)
↓
of the Taff
From earlier Caerdyf; -dyf is a mutated form of the river-name Taf.
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