godan verb (-ku), intransitive verb
panic; get flustered; lose one's cool
Describes a state of visible agitation or panic, often in response to an unexpected event. Stronger than 慌てる alone; implies a loss of composure.
火事の知らせに慌てふためいて、何も持たずに外に飛び出した。
Panicked by the fire alarm, I rushed outside without taking anything.
He got flustered by the sudden question and couldn't answer properly.