I can assure you that you won't be disappointed. She assured me (that) she was OK when I talked to her on the phone. His boss assured him that he had her continued support. = His boss assured him of her continued support.
What does I assure you mean?
to promise or tell something to someone confidently or firmly, or to cause someone to feel certain by removing doubt: She assured him (that) the check was in the mail.
What type of word is assure?
verb (used with object), as·sured, as·sur·ing. to declare earnestly to; inform or tell positively; state with confidence to: She assured us that everything would turn out all right.
How do you use rest assure in a sentence?
You can rest assured that you're going to get a good deal.
How do you use assuring?
Assure is something you would do to a person or an animal. These beings can have doubts or insecurities you can remove by assuring them, by giving them assurance: I assure you, we will get to the play on time. Tom locked the door, assuring Tim that their dog wouldn't be able to wander out during the night.