I. Not obscurely.
2. Distinctly; articulately.
The string of his tongue was loosed, and he spake plain.
Mar. vii. 35.
3. Simply; with rough sincerity.
Goodman Fact is allowed by every body to be a plain–
spoken person, and a man of very few words; tropes and
figures are his aversion. Addison’s Count Tariff.