Yummy
It is every.
young yucky yours yummy yacht yeast
redye
Yodel
yelling
yak
No word starting with the letter y contains the letter x.
a four letter word starting with Y could be: Yolk (as in an egg yolk) Yack Yarn Yawn York
artsyberrycarrycampydairydiarydecoydecaydelayemeryenemyemptyfunnyfishyfierygloryhairyhurryironyjollyjellylousyluckymaybenastyovarypeonypaddypettyqueryrainyreadyrunnyrallyseedysaltysunnysavvystorystrayteenytallyunityunifywimpywispy
epoxy
young
System synchronize dye Five letter word would be cycle.