Synonyms and related words :
advance, affirm, afford support, aid, air mattress, assist, assure, attest, authenticate, back, back up, bear, bear out, bear up, bedding, bolster up, brace, brace up, buck up, buoy up, buttress, carry, certify, cheer, circumstantiate, confirm, corroborate, cradle, crutch, cushion, document, embolden, encourage, finance, fortify, fund, further, give support, hearten, help, hold, hold up, innerspring mattress, inspire, inspirit, keep, keep afloat, keep up, lend support, litter, mainstay, maintain, mat, mattress, nerve, pad, pallet, pillow, probate, prop, prop up, prove, ratify, reassure, reinforce, rug, shore, shore up, shoulder, sleeping bag, springs, stay, strengthen, subsidize, substantiate, subvention, subventionize, support, sustain, underbed, underbedding, underbrace, undergird, underlie, underpin, underset, upbear, uphold, upkeep, validate, verify, warrant