—v.
1 tr. & intr. make or become nervous or confused; flurry (was flustered by the noise; he flusters easily).
2 tr. confuse with drink; half-intoxicate.
3 intr. bustle.
—n. a confused or agitated state.
Etymology: ME: orig. unkn.: cf. Icel. flaustr(a) hurry, bustle
Useful english dictionary. 2012.