Synonyms of the word

underivative

• adj. Not derivative.

original

• adj. (not comparable) Relating to the origin or beginning; preceding all others.
• adj. (not comparable) First in a series or copies/versions.
• adj. (not comparable) Newly created.
• adj. (comparable) Fresh, different.
• adj. (not comparable) Pioneering.
• adj. (not comparable) Having as its origin.
• n. An object or other creation (e.g. narrative work) from which all later copies and variations are derived.
• n. A person with a unique and interesting personality and/or creative talent.
• n. (archaic) An eccentric.