wrth

Etymology
From, from (compare 🇨🇬), from  (compare 🇨🇬).

Preposition

 * 1) by near, beside, with, at
 * 2) by used with a verbal noun to indicate causation
 * "cy"
 * "cy"

- Dorres i 'nghoes wrth chwarae pêl-droed wythnos diwethaf.

Conjunction

 * 1) as, while