Chiefly attributive. That is the thing itself, not something else; true, real, genuine; very. Obsolete.

Of a material, substance, or fabric: genuine; not counterfeit or spurious. Also used of an individual piece of such a material, etc. Now chiefly of…

Pure, unmixed; free from any foreign element or ingredient. spec. Unadulterated; genuine.

in grain adjectival phr. = dyed scarlet or crimson, fast dyed; hence in figurative use, esp. with contemptuous epithets, as ass, fool, knave, rogue…

Natural, not foreign or acquired, proper or peculiar to a person or thing, native. Obsolete.

(un-, prefix1 affix 2b. Cf. unsophisticated, adj.)

attributive. Of a thing: not appearing to be or presented as other than it actually is; genuine, unadulterated; (later chiefly) unsophisticated…

Not drawn aside or perverted; genuine, real.

Not tampered with, altered, or falsified; uncorrupted, genuine.

Lacking artifice; unsophisticated, unrefined; wanting polish or technical skill. Later also: unsubtle, tactless.

(un-, prefix1 affix 1.)

in the raw: (a) in a natural or untreated state; (b) bare, naked; in a starkly realistic way (colloquial).