While the ocean is wide, the trench may be far from continental sources of sediment and so may be deep. As continents approach each other, the trench can fill with continental sediments and become shallower.
Definition of blunt. 3a : abrupt in speech or manner She tends to be blunt. a blunt refusalb : being straight to the point : direct To be perfectly blunt, I don't think he can do it.
See dull. 2. short, gruff, rough, rude, uncivil, impolite. Blunt, bluff, brusque, curt characterize manners and speech. Blunt suggests lack of polish and of regard for the feelings of others: blunt and tactless. Bluff implies an unintentional roughness together with so much good-natured heartiness that others rarely take offense: a bluff sea captain. Brusque connotes sharpness and abruptness of speech or manner: a brusque denial.