Nouns:
* -ment: agreement, movement, judgment
* -tion: information, education, reaction
* -ness: happiness, sadness, kindness
* -er/-or: teacher, writer, actor
* -ship: friendship, leadership, scholarship
* -hood: childhood, adulthood, brotherhood
* -ism: capitalism, communism, feminism
* -cy: democracy, accuracy, efficiency
Verbs:
* -ize: modernize, symbolize, criticize
* -ify: beautify, simplify, clarify
* -en: strengthen, soften, lengthen
Adjectives:
* -ful: beautiful, powerful, grateful
* -less: careless, hopeless, worthless
* -able/-ible: readable, visible, flexible
* -al/-ical: historical, musical, critical
* -ous: dangerous, famous, curious
* -y: happy, sleepy, dirty
Adverbs:
* -ly: quickly, slowly, happily
* -ward: backward, forward, upward
* -wise: clockwise, otherwise, likewise
Other:
* -ette: cigarette, kitchenette
* -ing: swimming, dancing, singing (present participle)
* -ed: played, jumped, walked (past tense)
Remember:
* Suffixes are attached to the end of a word.
* They can change the part of speech of a word.
* Some suffixes have more than one meaning or function.