A word that starts with A and ends with U:
apercu.
A word that starts with U and ends with G: understanding.
A word that starts with E and ends with U: ecru.
One word that starts with U and ends in E is "unique."
uvula
guru
rondeau
undertow
Uranium
univ
A word that starts with y and ends with y is yay .
univ
ungrateful