assure

v.使确信，使放心；保证，担保

assist sb. with sth., assistance, assistant, assize, Assoc (also assoc), associate, associate...with, associated, association, associative, assonance, assort, assorted, assortment, Asst (also asst), assuage, assume, assumed, assumption, assurance, assure sb. of sth., assured, assured (also self-assured), assuredly, assuredness, AST, astatine, aster, asterisk, astern, astern of, asteroid, asthma, asthmatic, astigmatic, astigmatism, astir, astonish, astonished, astonishing,