Similar words: quarantine, guard, on guard, vanguard, lingua franca, mentor, far and away, harangue. Meaning: [‚gærən'tɔr /-tɔː] 
n. one who provides a warrant or guarantee to another.
n. one who provides a warrant or guarantee to another. 
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61) The central bank, as lender of last resort, is the ultimate guarantor of this collective good.
More similar words: quarantine, guard, on guard, vanguard, lingua franca, mentor, far and away, harangue, far and near, paranoid, wanton, inventory, antonym, appearance, forbearance, promontory, stentorian, preparatory, grant, errant, tyrant, vagrant, ignorant, warrant, frantic, vibrant, hydrant, aberrant, warranty, tolerant.