Spelling words with the -able suffix

The -able and -ably endings are the most common spellings for this sound and are therefore the best bet. Removing the -able suffix generally leaves a recognisable word, e.g. understand - understandable Words in word families using the suffixes -ation, -able and -ably are connected in spelling and meaning. Drop the final -e of the root word before adding the suffix -able unless the words end in -ce or -ge How to spell the curriculum words: privilege, system.