If you are confused by the usage of ‘erioed’ and ‘byth’, you aren’t alone! It is something I struggled with when I first started learning Welsh and many of my fellow learners agree that it is one of the most difficult distinctions to wrap your head around!
Translated into English, both words can mean either ‘ever’ or ‘never’ depending on the context but they aren’t interchangeable. Put simply, ‘byth’ is used for ongoing situations whereas ‘erioed’ is restricted to completed events. Let’s take a look at what I mean by analysing the examples below.
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