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assure definition

as·sure (ə s̸ho̵or)

transitive verb assured -·sured′, assuring -·sur′·ing

  1. to make (a person) sure of something; convince
  2. to give confidence to; reassure the news assured us
  3. to declare to or promise confidently I assure you I'll be there
  4. to make (a doubtful thing) certain; guarantee
  5. to make safe or secure
  6. Chiefly Brit. to insure against loss, esp. of life

Etymology: ME assuren < OFr asseurer < ML assecurare < L ad-, to + securus, secure

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