gummy bears
Vine
There are no one-word synonyms for 'palindrome'.
There is no one-word 8-letter palindrome in English, apparently!
Since palindrome denotes a word that reads the same forwards as backwards, a one-digit palindrome would not make sense.
tattarrattat
The word is "kayak."
The word is, "Huh?"
refer
A palindrome is a word or sentence that reads the same backwards as forwards. So Kityk is strictly not a palindrome, though loosely it might be called one, as 'y' is pronounced similar to 'i' in the word. 'A man, a plan, a canal, Panama.' is an interesting example of a palindrome.
The one-word palindrome that best fits that definition would be peep.
longestsegnol
Anadrome
Deified.