What is a suffix?
A suffix is a letter or a collection of letters that is added to the end of a word.
In English this can change the meaning.
Also, it can be required by grammar but not change the meaning; this could be to change the tense, the number, or for other reasons.
How many ways can you change the following root words by adding or changing the endings?
copy hike pat sad happy enjoy play bad move excite amaze pay bubble
List the suffixes you have used.