The opposite of overused.
A word that you had in your daily vocabulary but somehow forgot. It might even got overused but because you haven't used it in a long time it got underused again
Synonyms for underused
On this page, you will find 30 slang terms related to underused. Some of the top words include: um, ass clown, tired, supercalifragilisticexpealidocious, trite, and 25 more.