eke, uke, sky, ska, aka (meaning alias)
Rue.
add
Aqi
obi
Some 3 letter words with the letter "r" in the middle are: are, bra, bro, arm, url, and ere.
amo
see see
pig
Bay
"eye" is a 3 letter palindrome for the word energy.
Mud, bud, dud...and lots more.
Fat.