Definition of burgeon:
begin, build, bloom, gain, blossom, mount, rich, proliferate, upsurge, build up, effloresce, arrive, aggrandize, prosper, climb, roll up, escalate, fall/fit into place, originate, set in, start, snowball, boom, come into being, better, arise, beef up, appreciate, accelerate, accumulate, commence, balloon, wax, run up, soar, flower, unfold, blow, flourish, rise, mushroom.
- expand (part of speech: verb)
- increase (part of speech: verb)
- "The Vigil of Venus and Other Poems by "Q"", Q (AKA: Sir Arthur Thomas Quiller-Couch).
- "Rose and Roof-Tree Poems", George Parsons Lathrop.