Mawson, C.O.S., ed. (18701938). Rogets International Thesaurus. 1922.
Class IV. Words Relating to the Intellectual Faculties
Division (II) Communication of Ideas
Section I. Nature of Ideas Communicated
INTELLIGIBILITY; clearness, clarity, explicitness &c. adj.; lucidity, comprehensibility, perspicuity; legibility, plain speaking (manifestation) [See Manifestation]; precision [See Truth]; phonanta sunetoisi [Gr. φωναντα σϵνετoισι], a word to the wise.
BE INTELLIGIBLE &c. adj.; speak for itself, speak volumes; tell its own tale, lie on the surface.
RENDER INTELLIGIBLE &c. adj.; popularize, simplify, clear up; elucidate (explain) [See Interpretation].
UNDERSTAND, comprehend; take, - in; catch, grasp, follow, collect, master, make out; see with half an eye, see daylight, see ones way [all colloq.]; enter into the ideas of; come to an understanding.
INTELLIGIBLE; clear, clear as -day, - noonday, - crystal; lucid; perspicuous, transpicuous; luminous, transparent.
easily understood, easy to understand, for the million, intelligible to the meanest capacity, popularized.
PLAIN, distinct, clear-cut, hard-hitting, to the point, explicit; positive; definite (precise) [See Truth].
unambiguous, unequivocal, unmistakable (manifest) [See Manifestation], unconfused; legible, recognizable; obvious [See Manifestation].
GRAPHIC, telling, vivid; expressive (meaning) [See Meaning]; illustrative (explanatory) [See Interpretation].
in plain -terms, - words, - English; hitting the nail on the head.