antonyms are words that are
A word that has the exact opposite meaning of another word is its antonym. Life is full of antonyms, from the stop and go of a traffic signal to side-by-side restroom doors labeled men and women.. Most antonyms are pretty obvious, like good and bad, or black and white.. Some words can be transformed into their antonyms simply by adding the prefixes un, in, or non, as when likable is changed into its antonym, unlikable..