Tone

the author's implicit attitude toward the reader or the people, places, and events in a work as revealed by the elements of the author's style. The tone may be characterized as serious or ironic, sad or happy, private or public, angry or affectionate, bitter or nostalgic, or any other feelings that humans experience.

Example: John Steinbeck's short novel "Cannery Row" is nonjudgemental. He never expresses disapproval of the antics of Mack and his band. In fact, he treats them with unflagging kindness.

Sources:

Bedford/St. Martin's Press "Glossary of Literary Terms

McGraw Hill's Online Learning Center "Glossary of Literary Terms

Literary Terms: Comprehensive List by students of Ted Nellen