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I think her name’s Monica, but I’m not sure.
the most usual way of saying that you are sure about something
a stronger, more emphatic way of expressing certainty
used for expressing certainty that something will happen, based on a strong feeling rather than on facts
used informally to show that you are confident about the truth of what you are saying
a more formal way of expressing certainty about what someone is thinking or feeling, often used by people in authority
a way of expressing certainty about the facts of a situation, often used in official situations
used when you are not completely certain about something
a more informal way of saying that you are not certain about something
a formal way of saying that you are not certain about something
used for saying what you think is true, though you cannot be certain because you do not know all of the facts
used for saying that it is impossible for anyone to be certain about something
This is the American English definition of sure. View British English definition of sure.