A palinody is an obsolete term for a palinode - a poem in which an author retracts something which he has said in a previous poem.
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 4 words with the pattern PALI-O--. That is, eight letter words with 1st letter P and 2nd letter A and 3rd letter L and 4th letter I and 6th letter O. In alphabetical order, they are: paliform palimony palinode palinody