o dan

Etymology
From.

Preposition

 * 1) under

Usage notes
In literary Welsh, can mean both "under" and "until". In Welsh usage today, however, (originally the soft mutation of ) has become a preposition in its own right with the meaning "under" whereas  means "until", retaining the meaning "under" in certain expressions, compound words and place names. Modern or  are not usually mutated. is an alternative to.