There are 10 14-letter words that end with 'nating'.
| dechlorinating | discriminating | 
| conglutinating | exsanguinating | 
| indoctrinating | nonterminating | 
| predesignating | predestinating | 
| repristinating | unilluminating | 
Note: These 10 14-letter words that end with 'nating' are found from the USA & Canada version of the tournament Scrabble word list.