Naif a. : Having a true natural luster without being cut; -- applied by jewelers to a precious stone.

Naif a. : Naive; as, a naif remark.

Example:
How do you know when to use Naive and when to use Naif?

Taxonomy
faux-naïf, Merriam-Webster Online Dictionary, Dictionary, webster, Word Games, Webster Online Dictionary with audio pronunciations, adjective, glossary, english, language, ESL, nä, Etymology, falsely, ndash, iuml, prose, Unabridged Dictionary.

Defination from the web:
naïf from the Merriam-Webster Online Dictionary with audio pronunciations, thesaurus, Word of the Day, and word games. ... Learn more about "naif" and related topics at Britannica.com. See a map of "naif" in the Visual Thesaurus. Pronunciation Symbols. Share this ...