A. end.
A suffix is added to the END of a word to alter its meaning.
Examples of suffixes
-ed : walk -ed = walked
-ing : walk -ing = walking
-er : great -er = greater
-tion : educate -tion = education
-sion : divide -sion = division
-cian : music -cian = musician
-fully : hope -fully = hopefully
-est : tall -est = tallest