THESAURUS
Extend
abide, accord, add to, adjourn, administer, advance, afford, aggrandize, allocate, allot, allow, amplify, arch over, attain, augment, award, balloon, be lengthy, be prolonged, beef up, belong, bestow, bestow on, bestraddle, bestride, bide, bloat, blow up, boost, branch, branch out, bridge, broaden, build, build up, bulk, bulk out, carry, carry on, carry out, carry to, chatter, come to, communicate, confer, continue, continue to be, cover, crane, crescendo, dawdle, deal, deal in generalities, deal out, deepen, defeat time, defer, defy time, delay, deploy, develop, dilate, disentangle, dish out, dispense, disperse, distend, dole, dole out, donate, drag on, drag out, draw, draw out, dwell, dwell on, ecumenicize, elongate, encompass, endure, enlarge, environ, exalt, exist, expand, extend out, extend over, extend to, fan, fan out, fatten, fill out, flare, flatten, fork out, generalize, get to, gift, gift with, give, give freely, give out, globalize, go, go on, go out, go to, grant, greaten, hand out, hang fire, hang over, hang up, heap, heighten, help to, hike, hike up, hold, hold forth, hold off, hold on, hold out, hold over, hold up, huff, imbricate, impart, increase, inflate, issue, jack up, jump up, jut, keep, keep alive, keep going, keep on, keep up, lap, lap over, last, last long, last out, lavish, lay aside, lay by, lay over, lead to, lengthen, lengthen out, let have, let out, lie, lie over, linger on, live, live on, live through, magnify, maintain, make a generalization, maximize, mete, mete out, multiply, never finish, offer, open, open up, outdistance, outlie, outrange, outreach, outspread, outstretch, overarch, overgrow, overhang, overlap, overlie, override, overrun, pad, parlay, perdure, perennate, perorate, perpetuate, persist, pigeonhole, pose, postpone, pour, prefer, present, preserve, prevail, proceed, procrastinate, produce, proffer, prolong, prolongate, prorogate, prorogue, protract, puff, puff up, pull, pump, pump up, push aside, put aside, put off, put on ice, put straight, put up, pyramid, rain, raise, ramify, range, range out, rarefy, reach, reach out, reach to, recess, rectify, remain, render, reserve, retain, run, run on, run out, run to, serve, set aside, set by, set straight, shell out, shelve, shift off, shingle, shower, sit up, sleep on, slip, smooth, snow, snowball, span, speak at length, spin out, splay, spraddle, sprangle, sprawl, spread, spread like wildfire, spread out, stand, stand on tiptoes, stand over, stand up, stave off, stay, stay on, straddle, straggle, straighten, straighten out, straighten up, strain, stretch, stretch away to, stretch out, stretch to, string out, submit, subsist, sufflate, supplement, surround, survive, suspend, sustain, sweep, swell, table, take a recess, take in, tarry, tauten, temporize, tender, tense, thicken, thrust out, tide over, tighten, tumefy, unbend, uncurl, unfold, universalize, unkink, unroll, unsnarl, up, vary, vouchsafe, waive, wear, wear well, widen, yield
ROGET THESAURUS
Extend
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,
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.
Length
VB
be long, stretch out, sprawl, extend to, reach to, stretch to, make a long arm, drag its slow length along, render long, lengthen, extend, elongate, stretch, prolong, produce, protract, let out, draw out, spin out, drawl, enfilade, look along, view in perspective, distend (expand).
Elasticity
VB
stretch, flex, extend, distend, be elastic, bounce, spring back.