surety, security - a guarantee that an obligation will be met

deposit - a payment given as a guarantee that an obligation will be met

stock warrant - a written certificate that gives the holder the right to purchase shares of a stock for a specified price within a specified period of time

assurance, pledge - a binding commitment to do or give or refrain from something; "an assurance of help when needed"; "signed a pledge never to reveal the secret"

safety net - a guarantee of professional or financial security

assurance, pledge - a binding commitment to do or give or refrain from something; "an assurance of help when needed"; "signed a pledge never to reveal the secret"

collateral - a security pledged for the repayment of a loan

pledge, plight - promise solemnly and formally; "I pledge that will honor my wife"

bail - secure the release of (someone) by providing security

assure, ensure, guarantee, insure, secure - make certain of; "This nest egg will ensure a nice retirement for us"; "Preparation will guarantee success!"

stipulate - give a guarantee or promise of; "They stipulated to release all the prisoners"

secure - assure payment of

guarantee, vouch - give surety or assume responsibility; "I vouch for the quality of my products"

doom - make certain of the failure or destruction of; "This decision will doom me to lose my position"

make - assure the success of; "A good review by this critic will make your play!"

promise, assure - make a promise or commitment

subvent, subvention, underwrite - guarantee financial support of; "The opera tour was subvented by a bank"

underwrite, insure, cover - protect by insurance; "The insurance won't cover this"

endorse, indorse, certify - guarantee as meeting a certain standard; "certified grade AAA meat"

back, endorse, indorse, plump for, plunk for, support - be behind; approve of; "He plumped for the Labor Party"; "I backed Kennedy in 1960"