Noun

• S: (n) guarantee, warrant, warrantee, warranty (a written assurance that some product or service will be provided or will meet certain specifications)
• S: (n) guarantee (an unconditional commitment that something will happen or that something is true) "there is no guarantee that they are not lying"
• S: (n) guarantee, guaranty (a collateral agreement to answer for the debt of another in case that person defaults)

Verb

• S: (v) guarantee, vouch (give surety or assume responsibility) "I vouch for the quality of my products"
• verb group
• direct troponym / full troponym
• direct hypernym / inherited hypernym / sister term
• derivationally related form
• sentence frame
• S: (v) guarantee, ensure, insure, assure, secure (make certain of) "This nest egg will ensure a nice retirement for us"; "Preparation will guarantee success!"
• S: (v) undertake, guarantee (promise to do or accomplish) "guarantee to free the prisoners"
• S: (v) guarantee, warrant (stand behind and guarantee the quality, accuracy, or condition of) "The dealer warrants all the cars he sells"; "I warrant this information"