Adjective

(en-adj)

Free of flaws or imperfections; unsullied.

* (1800-1859)

Such was the origin of a friendship as warm and pure as any that ancient or modern history records.

(senseid)Free of foreign material or pollutants.

* (Isaac Watts) (1674-1748)

A guinea is pure gold if it has in it no alloy.

Free of immoral behavior or qualities; clean.

* Bible, v. 22

Keep thyself pure .

(label) Done for its own sake instead of serving another branch of science.

* {{quote-magazine, date=2014-06-21, volume=411, issue=8892, magazine=(The Economist)

, title= Magician’s brain , passage=The [Isaac] Newton that emerges from the [unpublished] manuscripts is far from the popular image of a rational practitioner of cold and pure reason. The architect of modern science was himself not very modern. He was obsessed with alchemy.}}

(label) Of a single, simple sound or tone; said of some vowels and the unaspirated consonants.

(label) Without harmonics or overtones; not harsh or discordant.

Adjective

(er)

Very bad or intense.

* {{quote-magazine, date=2012-01

, author=Donald Worster , title=A Drier and Hotter Future , volume=100, issue=1, page=70 , magazine= citation , passage=Phoenix and Lubbock are both caught in severe drought, and it is going to get much worse. We may see many such [dust] storms in the decades ahead, along with species extinctions, radical disturbance of ecosystems, and intensified social conflict over land and water. Welcome to the Anthropocene, the epoch when humans have become a major geological and climatic force.}}

Strict or harsh.

Sober, plain in appearance, austere.