Origin: 1275–1325; Middle English bostful. See boast1, -ful Related formsboast·ful·ly, adverb
boast·ful·ness, noun
o·ver·boast·ful, adjective
o·ver·boast·ful·ly, adverb
o·ver·boast·ful·ness, noun
EXPANDun·boast·ful, adjective
un·boast·ful·ly, adverb
un·boast·ful·ness, noun
COLLAPSESynonyms
conceited, cocky, pompous, cocksure, vainglorious, egotistical.