Definition of "bumptious" [bump•tious]

• Crudely or loudly assertive; pushy. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "'bumptious' - about it, because his own red hair was very plainly to be seen behind."
• ""Yes, sir," I returned proudly, for the word "bumptious" had a ring of importance in it, and I had every reason to believe that the Malcolms were persons of quite large importance."
• "Smith was a young man of about twenty-eight, vain and no doubt somewhat "bumptious," and it is easy to believe that Wingfield and the others who felt his superior force and realized his experience, honestly suspected him of designs against the expedition."