The endings -able-ion-er-or-ance-ence-ous-ish, and -al are generally used to form adjectives and nouns. Read these guidelines to learn how they affect the spelling of the word to which they’re added, then test yourself with the preliminary training quizzes. Click on the widget titles for more tips and advanced quizzes.

-Able or -Ible?

-Acy or -Asy?

-Ance or -Ence?

-Ancy or -Ency?

-Ant or -Ent?

-Ar, Or, or Er?

-Ary, -Ory, or Ery?

-Efy or -Ify?

-Eous or -Ious?