1. (v. t.) To increase greatly in number; to produce cells rapidly; as, the species proliferated in its new environment\.

2. (v. t.) To produce zooids by budding.

abound accrue accumulate advance appreciate balloon be fruitful be productive beget bloat boom breed breed true bristle with broaden burgeon copulate crawl with creep with crescendo crossbreed develop engender exuberate father flow fructify gain gain strength generate get get ahead go up grow gush inbreed increase intensify make love mother mount multiply mushroom outbreed overflow pour procreate propagate pullulate rain reproduce reproduce in kind rise run over run up shoot up shower sire snowball spread stream strengthen swarm with swell teem teem with wax widen