what is the “Pu–y”?
I looked up the dictionary for word match the pattern:
puberty pubescency pubiotomy publically publicity publicly
puckery puckishly pucksey puddingberry puddingy puddly puddy
pudency pudgily pudgy pudibundity pudicity pudsey pudsy puerilely
puerility puerpery puffery puffily puffingly puffy puggry puggy
pugilistically pugnaciously pugnacity puisny puissantly puky
pulchrify pulicosity pulingly pullery pulley pulmometry pulmonary
pulmonectomy pulmotracheary pulpally pulpectomy pulpify pulpily
pulpitically pulpitly pulpitolatry pulpitry pulpotomy pulpy
pulsatility pulsatively pulsatory pulselessly pulverulently pulvinately
puly pumpkinify pumpkinity punchily punchy punctiliosity
punctiliously punctuality punctually punditically punditry
pungency pungently pungey pungy punily punishability punishably
punitionally punitively punitory punkey punky punningly punnology
punny punty puny pupilability pupilarity pupilary pupillarity
pupillary pupillometry pupilloscopy puppetly puppetry puppify
puppily puppy purblindly purchasability purchasery purdy purely
purey purfly purgatively purgatory purgery purificatory purify
puristically puritanically purity purparty purplely purply
purportedly purportively purposedly purposefully purposelessly
purposely purposively purringly purry pursily pursley pursuantly
pursy purty purulency purulently purvey pushfully pushily
pushingly pushy pusillanimity pusillanimously pusley pussley
pussly pussy putationary putatively puthery putidly putrefy
putrescency putrescibility putridity putridly putrilaginously
putteringly putty puxy puy puzzledly puzzleheadedly puzzlingly

the command is “grep ‘^pu[a-Z]*y$’ /usr/share/dict/words”

but I still don’t know which one is it.