offshootEnglishOxford American Thesaurusoffshoot noun 1 the cactus grew some offshoots: side shoot, shoot, sucker, tendril, runner, scion, slip, offset, sprout, sprig, stem, twig, branch, bough, limb, spur; technical stolon. ▷antonyms trunk. 2 an offshoot of Thomas Cromwell's line: descendant, scion, relation, relative. 3 offshoots of big firms or finance houses: subsidiary, branch, derivative, adjunct, appendage. 4 one practical offshoot of the growth of interest in heritage is the growth of tourism: outcome, result, effect, consequence, upshot, product, byproduct, spin-off, ramification, development, outgrowth.