One of those words that are the same forwards and backwards (called a palindrome) and has two 'r's's is racecar. I don't know if this is the word you are looking for, but
barrier, warrior, farrier, furrier, reveler, terrier, worrier, arrears
rotator, reviver, repaper, deified
Hannah if its six
Racecar
A five letter word that can be spelled forward and backward is "Madam".
Bob
repaper, rotator, reviver
Devoved Repaper reviver testset rotator
Peep.
redder
The antonym for forward is backward, but the opposite direction can be reverse or rearward.
It is pep.
"Madam, I'm Adam". (same letter order forward or backward)
palindrome
The German noun reittier.
you spelled "u" wrong its unatee