Antonyms are words that have opposite meanings. For the term "rig out," which means to dress or equip oneself, some antonyms include undress, strip off, divest, and disrobe. These words imply removing clothing or equipment rather than putting them on. Other antonyms can include bare, unclothe, expose, and unveil, signifying the act of revealing or exposing the body or object underneath. In contrast, "rig in" can be considered an antonym of "rig out" and means to pack away or store clothing or equipment. Antonyms are crucial in language use as they provide variety and contrast to word meanings, allowing more precise communication.