THESAURUS
outgrow
blossom, brew, burgeon, develop, flourish, gather, germinate, grow, grow up, hypertrophy, increase, mature, mushroom, overdevelop, overgrow, overtop, procreate, pullulate, reproduce, shoot up, spring up, sprout, sprout up, thrive, tower, upshoot, upspear, upspring, upsprout, vegetate, wax
ROGET THESAURUS
outgrow
Expansion
VB
become larger &c (large), expand, widen, enlarge, extend, grow, increase, incrassate, swell, gather, fill out, deploy, take open order, dilate, stretch, distend, spread, mantle, wax, grow up, spring up, bud, bourgeon, shoot, sprout, germinate, put forth, vegetate, pullulate, open, burst forth, gain flesh, gather flesh,
outgrow, spread like wildfire, overrun, be larger than, surpass, render larger &c (large), expand, spread, extend, aggrandize, distend, develop, amplify, spread out, widen, magnify, rarefy, inflate, puff, blow up, stuff, pad, cram, exaggerate, fatten.