The definition of bluff refers to the act of pretending something that is not true or a very steep, broad-faced cliff next to the ocean or a river.(noun)
To bluff is to pretend something that is not true.(verb)
An example of bluff is when you bet big in a card game to fool people into thinking you have a better hand than you do.
See bluff in Webster's New World College Dictionary
transitive verb, intransitive verb
Origin: 17th c.: prob. < Du bluffen, to brag, boast or verbluffen, to baffle, mislead
Origin: orig. a naut. term, prob. < Du blaf, flat, broad
See bluff in American Heritage Dictionary 4
verb bluffed, bluff·ing, bluffs verb, transitive
Origin: Probably from Dutch bluffen
Origin: , from Low German.
Origin: Probably from obsolete Dutch blaf
Origin: or Middle Low German blaff, broad.
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