Pure Definition

pyo͝or

purer, purest

adjective

purer, purest

Having a homogeneous or uniform composition; not mixed.

Pure oxygen.

American Heritage

Free from anything that taints, impairs, infects, etc.; clear.

Pure water or air.

Webster's New World

Free of dirt, pollutants, infectious agents, or other unwanted elements.

Pure water.

American Heritage

Containing nothing inappropriate or extraneous.

A pure style of piano playing.

American Heritage

Simple; mere.

Pure luck.

Webster's New World

Synonyms:

Antonyms:

adverb

(Liverpudlian) To a great extent or degree; extremely; exceedingly.

You're pure busy.

Wiktionary

Other Word Forms of Pure

Base Form:

pure

Comparative:

purer

Superlative:

From Middle English pur, from Old French pur, from Latin purus (“clean, free from dirt or filth, unmixed, plain"), from Proto-Indo-European *peu-, *pu- (“to cleanse, purify"). Displaced native Middle English lutter (“pure, clear, sincere") (from Old English hlÅ«tor, hluttor), Middle English skere (“pure, sheer, clear") (from Old English scÇ£re and Old Norse skÇ£r), Middle English schir (“clear, pure") (from Old English scÄ«r), Middle English smete, smeate (“pure, refined") (from Old English smÇ£te; compare Old English mÇ£re (“pure")).

From Wiktionary
Middle English pur from Old French from Latin pūrus peuə- in Indo-European roots

From American Heritage Dictionary of the English Language, 5th Edition