W, X, Y & Z are for

Wool
Wroth
Weak
Wait
Wounded
Wondrous
Worthwhile
Whistle - I can't but I wish that I could.
Waffles

Xray
Xerox
Xanthum gum
xXx

Yarn
YoYo
Young (at heart)
Y2K - tempest in a teapot
Yak - verb & noun
Yin Yang - I need to find my Yang and find my balance again.
Yeast - mmm ... now I crave fresh bread.
Yearn
Yawn

Zoo
Zamboni
Zebra
Zen
Zest
Zydeco

Zabaglione