MyVocabulary.com includes these SUFFIXES as a part of your Root-A-Week program! Suffixes modify and extend meaning. Use 9 suffix puzzles at grade level for each of these 9 "important" suffixes. "-ABLE" words: Bearable, Expandable, Incurable, Portable, Reliable, Respectable, Sociable,Transferable Suffix -ABLE and -IBLE mean "able, can do."