'burst forth' definitions:

Definition of 'burst forth'

From: WordNet
verb
Jump out from a hiding place and surprise (someone); "The attackers leapt out from the bushes" [syn: leap out, rush out, sally out, burst forth]
verb
Be unleashed; emerge with violence or noise; "His anger exploded" [syn: explode, burst forth, break loose]
verb
Come into or as if into flower; "These manifestations effloresced in the past" [syn: effloresce, burst forth]

Synonyms of 'burst forth'

From: Moby Thesaurus