Lexicon :: Strong's G212 - alazoneia

ἀλαζονεία, and ἀλαζονία (which spelling, not uncommon in later Greek, T WH adopt [see Ι, ι]), -ας, ἡ, (from ἀλαζονεύομαι, i. e. to act the ἀλαζών, which see);
a. in secular writings [from Aristophanes down] generally empty, braggart talk, sometimes also empty display in act, swagger. For illustration see Xenophon, Cyril 2, 2, 12; mem. 1, 7; Aristotle, eth. Nic. 4, 13, p. 1127, Bekker edition; [also Trench, § xxix.].
b. an insolent and empty assurance, which trusts in its own power and resources and shamefully despises and violates divine laws and human rights: 2 Macc. 9:8; Wis. 5:8.
c. an impious and empty presumption which trusts in the stability of earthly things, [R. V. vaunting]: James 4:16 (where the plural has reference to the various occasions on which this presumption shows itself; [cf. Winers Grammar, § 27, 3; Buttmann, 77 (67)]); τοῦ βίου, display in one's style of living, [R. V. vainglory], 1 John 2:16.

BLB Scripture Index of Thayer's