Definitions:

1. to be unleashed verb
   • I burst forth from my chains.
2. to come into or as if into flower verb
   • The buds burst forth from the tree in the spring.
3. to jump out from a hiding place and surprise someone verb
   • I burst forth from my hiding place and nearly made my friend drop to the floor from sheer panic.

Synonyms:

• effloresce
• explode
• leap out
• rush out
• sally out