The List
There are 265 4 letter words with Y as the last letter. The highest scoring is JAZY at 23 points in Scrabble. 5 of them contain no vowel at all: GYNY, SCRY, SKRY, SPRY, TYPY.
ABLYACHYADDYADRYAERYAFFYAGLYAHOYAIRYALAYALKYALLYAPAYARMYARSYARTYASHYAWAYAWFYAWNYAWRYBABYBEVYBLAYBLEYBODYBOGYBONYBOXYBRAYBREYBUOYBURYBUSYCAGYCAKYCANYCAVYCHAYCITYCLAYCLOYCOKYCOLYCONYCOPYCORYCOSYCOWYCOXYCOZYCRAYDAVYDEFYDEMYDENYDEWYDEXYDIDYDIXYDOBYDOGYDOMYDOPYDORYDOTYDOXYDOZYDRAYDREYDULYDUTYEASYEDDYEDGYEELYEERYEGGYELMYEMMYENVYESKYESPYEYRYFADYFIKYFLAYFLEYFOGYFOXYFOZYFRAYFUMYFURYGABYGAMYGAPYGAZYGLEYGOBYGOEYGORYGRAYGREYGULYGYNYHAZYHERYHOLYHOMYHUGYICKYIDLYIFFYILLYIMMYINBYINKYINLYJASYJAXYJAZYJIVYJOEYJOKYJUDYJURYLACYLADYLAKYLAZYLEVYLILYLIMYLINYLOGYLORYLUNYMANYMARYMATYMAZYMINYMIRYMITYMIXYMOBYMOLYMONYMOPYNARYNAVYNIXYNOSYNOWYOAKYOARYOATYOBEYOCCYOFAYOFFYOILYOKAYOLDYONLYOOFYOOSYOOZYORBYOWLYPACYPALYPATYPILYPINYPIOYPIPYPITYPIXYPLAYPLOYPOGYPOKYPOLYPONYPORYPOSYPOXYPRAYPREYPUKYPULYPUMYPUNYQUAYQUEYRACYRELYRENYRICYRIMYROKYROPYRORYROSYRUBYRULYSAGYSCRYSHAYSIZYSKRYSLAYSLEYSOMYSPAYSPRYSTAYSTEYSUMYSWAYSWEYTAKYTEDYTHEYTIDYTINYTIVYTOBYTODYTOEYTONYTORYTOWYTRAYTREYTROYTUNYTWAYTYPYUGLYUMPYUNDYUPBYUPSYURDYVARYVERYVINYVIZYWADYWALYWANYWARYWAVYWAXYWHEYWILYWINYWIRYXRAYYAWYYUKYZANY