Definition
'Certain' means being absolutely sure or having no doubt about something. It implies a strong conviction or knowledge. Unlike being uncertain or unsure, 'certain' suggests a state of confidence. Think of being 'certain' that the sun will rise tomorrow. It conveys a sense of reliability and predictability. A 'certain' outcome is one that is highly likely to occur, barring unforeseen circumstances. It's about the state of complete mental affirmation.