This document defines and provides examples of common suffixes used to form nouns, verbs, and adjectives in the English language. It discusses noun suffixes like -er, -ee, -(t)ion, -ist, -al, -ness, -ment, -hood, and -(i)ty. It also examines adjective suffixes such as -able/-ible, -acious/-icious, -al, -an/-ian, -ant/-ent, -ary, -ed, -en, -ern, -escent, -ful, -ic/-ical, -ing, -ish, -ive, -less, -ly, -oid, -ose, -ous, -some, -worthy