adj. 1 blustering, gruff, rough, abrupt, blunt, curt, short, crude Fred's bluff manner puts many people off 2 frank, open, hearty, straightforward, plain, plain-spoken, outspoken, affable, approachable, good-natured, friendly That comment is typical of his bluff honesty
n. 3 cliff, escarpment, precipice, scarp, headland, promontory, palisades As you sail down the lower Hudson river, the tall bluffs form a natural wall along the western bank