What does 'for sure' mean?

What it means: Definitely, certainly, or absolutely. It can confirm a statement or express agreement. "Are you coming tonight?" "For sure."

• Agreement: "That makes sense." "For sure."
• Confirmation: "I'll be there for sure."
• Emphasis: "That's for sure." (= that's definitely true)

Why natives say this: It's a versatile filler that softens certainty — "for sure" sounds more relaxed than "absolutely" or "certainly." It signals confidence without formality.

Register: Casual American English. Common among younger speakers. You'll hear it in California especially ("Cali" for sure). British English equivalents: "definitely", "absolutely", "of course."

• "Definitely" — neutral, works everywhere
• "Absolutely" — more formal
• "Of course" — implies it goes without saying

Tags: American English, agreement, confirmation, informal