Definition of "fluster" [flus•ter]

• To make or become nervous or upset. (verb-transitive)
• A state of agitation, confusion, or excitement. (noun)

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.

• "Perhaps Mr. Batty was a person of notable industry -- perhaps remarkable for always beings in a "fluster" -- perhaps the rural Paul Pry of his day and district."
• "But th 'owd lad wur i' sich a fluster, that istid o 'stoppin' it, he swapped th 'barrel to another tune."
• "This will fluster Manning and could force him into ill-advised passes that lead to interceptions."