Some words that start with I and end with R are:
"Rex" is a word that starts with r and ends with x.
a two letter word that starts with P and ends with R
rondeau
rondeau
jar...
radishrashravishreachreattachreestablishreddishrefurbishrefinishrefreshrehashrelinquishrelishrematchreplenishreproachrepublishreteachretouchrichroachrubbish
Czar is a 4 letter word. It begins with C and ends with R.
rotator
rotunda
Rota
air
rutabaga