Yeti or yogi.
Some words that start with G and end with Y are:gabbygalaxygalleygaudygaygenealogygentlygeographygeologygeometryghastlyghostlygigglygiddygingerlyglorygoodygoofygorygraduallygravellygravelygravitygravygraygreedygullygummyguppyGuy
Some words that start with a vowel and end in a Y are:animosityanyelectrifyenemyeveryexactlyonlyorneryuglyusury
meaty
lay
yearly
Silly
obscurityobscenityobesityobligatoryobviouslyoddlyoddityoratoryorganicallyoffertoryoilyonlyopportunityorangeryornatelyorderlyorgandyoriginallyordinarilyornery
By Bye Buy
tangythieverythuggerytawnytackytallytestythoroughlythirtytwentytinytimelytouchytotallytrulytrendytragedytrustytrickytrickerytrilogyterritorytreasurytrophyturkeytheorytubbytipsytheocracytrigonometrytyrannythriftytuppennytrashythytrytelepathytomographytopography
Words that start with R and end with Y are:racyrainyrallyraspberryraspyratifyrayreadilyreadyreallyrecoveryrectoryregencyregistryrelayrelyriskyrosaryrosyrowdyroyaltyrubyruddyrudelyrunwayrusty
How about these: -kitty -Katy -kooky
play, ploy, pretty