Obscurity N. obscurity &c (unintelligibility) 519; involution; hard words; ambiguity &c 520; unintelligibleness; vagueness &c 475, inexactness &c 495; what d'ye call 'em &c (neologism) 563

The impediments in the way of carrying the gospel among the heathen must arise, I think, from one or other of the following things; either their distance from us, their barbarous and savage manner of living, the danger of being killed by them, the difficulty of procuring the necessaries of life, or the unintelligibleness of their languages.