1398. Trevisa, Barth. De P. R., IX. ii. (Bodl. MS.). Noþing is more vncerteyne þanne tyme, noþing more vnperceptible.
1603. Holland, Plutarch’s Mor., 1086. The diversitie of good things and evill is very small, and unperceptible by the sense.
1653. H. More, Antid. Ath., II. i. § 2. Matter … unperceptible to any of our Senses. Ibid. (1682), Contn. Remark. Stor., 10. A tugging … for his Sword by an invisible Hand. By which, I suppose, is meant an unperceptible hand.
