What does sure actually mean??
Sure may mean yes, as in, 'would you like to come for a walk, '. 'Sure.' It means certain , definite or valid, Sure is also a question as in,' are you sure'.
The dictionary definition would include concepts such as "certain", "guaranteed". Americans (but not Britons) tend to answer "sure" to almost any question, as a simple linguistic habit, without the word having much meaning. A bit like the use of the word "like" as a meaningless filler by many people today.
confident in what one thinks or knows; having no doubt that one is right.
Usually spoken in hope as the underlying emotion. Like asking a date to go sailing? "Sure actually." Translation, women do NOT enjoy sailing.
Are you SURE you want the answer?