There are 18 10-letter words that end with 'nation'.
alienation | catenation | detonation |
coronation | divination | domination |
marination | gemination | intonation |
iodination | lamination | nomination |
rumination | pagination | patination |
stagnation | ordination | supination |
Note: These 18 10-letter words that end with 'nation' are found from the USA & Canada version of the tournament Scrabble word list.