Answer 1

I got this from http://en.allexperts.com/q/Spanish-Language-1551/spanish-word.htm

"Interestingly, there are no actual Spanish words that begin with the letter "W". However, there are a few words used in Spanish that begin with "w", but they are words borrowed from other languages, often English. For example, "winsurf", "walkman" and "western". I hope that answers your question."

Use About.com for Spanish.

Answer 2

I don't know any, I'm sorry.

Answer 3

I got this from Vox Diccionario de Primaria de la Lengua Española:

wáter = 1. Es otra forma de escribir: váter. 2. inodoro; retrete; servicio.

Answer 4

If you check a Spanish dictionary, you will find a handful of words but they are words that were borrowed from other languages and they are not actually Spanish words.

Answer 5

its the same with words that start with K, they are only words borrowed from other languages.