To Act Big
To Be Arrogant, To Be Bossy
intransitive verb, godan verb
いばる
威張る (いばる) To Act Big, To Be Arrogant, To Be Bossy
誇る (ほこる) To Be Proud Of, To Boast Of
張る (はる) To Stretch Over Something, To Spread Out, To Swell, To Be Taut
茨 (いばら) Thorn, Briar, Wild Rose
Proud and Arrogant 威張る people take their majesty 威 and stretch 張る it to show off.