| Word | Definitions | Synonyms |
|---|---|---|
| nudibranch | (noun) any of various marine gastropods of the suborder Nudibranchia having a shell-less and often beautifully colored body | Synonyms: sea slug |
| nudism | (noun) going without clothes as a social practice | Synonyms: naturism |
| nudist | (noun) a person who practices nudity for reasons of health or religion | Synonyms: naturist |
| nudity | (noun) the state of being without clothing or covering of any kind | Synonyms: nakedness, nudeness |