guarantee

Meanings

• a written assurance that some product or service will be provided or will meet certain specifications
• an unconditional commitment that something will happen or that something is true
  • "there is no guarantee that they are not lying"
• a collateral agreement to answer for the debt of another in case that person defaults
• give surety or assume responsibility
• make certain of
  • "Preparation will guarantee success!"
• promise to do or accomplish
  • "guarantee to free the prisoners"
• stand behind and guarantee the quality, accuracy, or condition of

Synonyms

assure, ensure, guaranty, insure, secure, undertake, vouch, warrant, warrantee, warranty