fluster

/ˈflə-stər/

probably of Scandinavian origin; akin to Icelandic flaustur hurry

verb

  1. to put into a state of agitated confusion : upset

  2. to make tipsy

The speaker was obviously flustered by the interruption.

discompose disquiet disturb perturb agitate upset fluster mean to destroy capacity for collected thought or decisive action. discompose implies some degree of loss of self-control or self-confidence especially through emotional stress. disquiet suggests loss of sense of security or peace of mind.

noun

  1. a state of agitated confusion

They had been talking about it for days, and when they were getting ready to go out they were all in a fluster.