society > leisure > the arts > literature > style of language or writing > plainness > [noun] > plain language (5)
Straightforward, unequivocal language; simple or easily comprehensible words or language; clear terms.
plain (later also downright) Dunstable: simple, direct, or honest speech or language; plain speaking; (with the) the unvarnished truth. Cf. sense…
Direct, undeviating. colloquial. Of an utterance: Outspoken, unreserved. Also, straightforward, not evasive. straight talk n. a piece of plain…
The action of speaking out; frank or candid words.