you
A word that starts with y and ends with y is yay .
yearly
yacht.
yearly
Joy Jazzy
happy horny hilly.
Words that start with R and end with Y are:racyrainyrallyraspberryraspyratifyrayreadilyreadyreallyrecoveryrectoryregencyregistryrelayrelyriskyrosaryrosyrowdyroyaltyrubyruddyrudelyrunwayrusty
every
Duty has four letters and starts with a D, and ends with a Y.
yean, yearn, yin
Acceptability, admissibility and affordability begin with a and end with y. Applicability, assignability and attainability begin with a and end with y.
The only English option is the word "you."