Here is the full list of all 9 Geekwords : Game of Words achievements.
Complete Season 1 of Game of Words
Complete Season 2 of Game of Words
Complete Season 3 of Game of Words
Complete Season 4 of Game of Words
Complete Season 5 of Game of Words
Complete Season 6 of Game of Words
Complete Season 7 of Game of Words
Complete Season 8 of Game of Words
Complete Every Season of Game of Words