- a sudden and violent release or outpouring: an outburst of tears.
- a sudden spell of activity, energy, etc.
- a public disturbance; riot; outbreak.
- a bursting forth; eruption.
- a sudden and violent expression of emotion
- an explosion or eruption
n.1650s, from out + burst (v.). Outbresten was a verb in Middle English (mid-12c.), from Old English utaberstan.