1Bursting with activity; full of intense excitement.
2Bursting with flame, light, or colour.
3Flaring or spread out, expanded, unfurled.
1In or into a state of intense excitement or activity.
2So as to burst with flame, light, or colour.
Mid 19th century; earliest use found in Charles Mackay (1812–1889), poet and writer. From a- + either flare or flare.