unwellness Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. a state of being unhealthy or ill. Example Sentence She stayed home from school because of unwellness. More Example Sentences Unwellness can affect a person's mood. Synonyms illness; sickness; discomfort Antonyms health; wellness; fitness Hear It! Say It! Write It! unwellness Switch to cursive Start Share with your friends: