This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. So crude and unrefined as to be lacking in discrimination and sensibility.

adj. coarse; crude; not refined or sensible

adj. materialistic

adj. dense

adj. Gross; thick; dense; coarse; not elaborated or refined.

Thick; coarse; gross; not thin nor fine: now chiefly used of immaterial things.

Gross; stupid; obtuse: as, crass ignorance.

n. A species of sea-anemone, Bunodes crassicornis.

adj. (of persons) so unrefined as to be lacking in discrimination and sensibility

"Many of the Reformers (by my reading of them) condemned the notion of real presence (and transubstantiation) because they interpreted it as a fleshy and physical presence (what you call crass and I might call immoderate realist)."

unrefined   

sensible    delicate    refined   

gross    thick    dense    coarse    crude    stupid   

Alsace    Cass    Glass    Grass    Grasse    Jas    Mass    Mass.    Nass    Pass   

grossest    unpardonable    puerile    pardonable    gross    blatant    bestial    pedantic    materialistic    egregious