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.
outspoken - characterized by directness in manner or speech; without subtlety or evasion; blunt talking and straight shooting; a blunt New England farmer; I gave them my candid opinion; forthright criticism; a forthright approach to the problem; tell me what you think--and you may just as well be frank; it is possible to be outspoken without being rude; plainspoken and to the point; a point-blank accusation