little understood

“For as the French book saith, Sir Launcelot weened, when he felt Sir Gawaine double his strength, that he had been a fiend and none earthly man; wherefore Sir Launcelot traced and traversed, and covered himself with his shield, and kept his might and his braide during three hours; and that while Sir Gawaine gave him many sad brunts, and many sad strokes, that all the knights that beheld Sir Launcelot marvelled how that he might endure him; but full little understood they that travail that Sir Launcelot had for to endure him.”

Le Morte Darthur: Sir Thomas Malory's Book of King Arthur and of his Noble Knights of the Round Table, Volume 2

“And he goes on to say, ” 'It has sometimes occurred to me, that the occult causes of his lady's separation from him, round which herself and her legal advisers have thrown such formidable mystery, may have been nothing more than some imposture of this kind, some dimly-hinted confession of undefined horror, which, though intended by the relater to mystify and surprise, the hearer so little understood as to take in sober seriousness.”

Lady Byron Vindicated