One Syllable Names for Boys

Modern virtue name, playing on the word "tough".

Gwil is short for Gwilym — so essentially the Welsh version of Will — and is sometimes used as a name in its own right.

Streamlined Estonian form of Simon.

There were no baby boys named Cay born in the US last year, but there's no reason why there couldn't be, especially with the rise in popularity of the similar Kai as well as the nouveau proper names Cayden, Cayson and so on. Cay Dose was an 18th century German architect and Christian Cay Lorenz Hirschfeld was a German garden historian of the same era.

With a sound that brings to mind at once "whim," "vim," and "win," this is one Dutch boys' name with serious potential for use in the English-speaking world.