Boast, v. t. 1. To display in ostentatious language; to speak of with pride, vanity, or exultation, with a view to self-commendation; to extol.
Lest bad men should boast
Their specious deeds.
Milton.
2. To display vaingloriously.
3. To possess or have; as, to boast a name.
To boast one's self, to speak with unbecoming confidence in, and approval of, one's self; — followed by of and the thing to which the boasting relates.
Boast not thyself of to-morrow.
Prov. xxvii. 1