surest >> ʃɔː
Definition: [adjective] completely confident that one is right.
Example: I'm sure I've seen that dress before
Definition: [adjective] certain to receive, get, or do something.
Example: United are sure of a UEFA Cup place
Definition: [adjective] true beyond any doubt.
Example: what is sure is that learning is a complex business
Definition: [adjective] showing confidence or assurance.
Example: the drawings impress by their sure sense of rhythm