aflutter,adv., prop.phr.|əˈflʌtə(r)| [a prep.1 + flutter.] In a flutter, agitated. 1830G. R. Gleig Country Curate I. ix. 178 All the unmarried women were a-flutter when I came among them.1855Browning Men & Women II. 147 A cornfield-side a-flutter with poppies.