When something is still "uncertain" or "undecided" ☁️🤷‍♂️ (Instead of saying: "I don't know about the plan") When a decision has not been finalized or circumstances (such as travel or market conditions) remain unclear: 💬 Up in the air. /ʌp ɪn ðə er/ ✅ Examples for different levels: 🔸 B1 (Intermediate): "I want to go on holiday, but my plans are still up in the air." 🔸 B2 (Upper-Intermediate): "The launch date for the new project is still up in the air due to the budget." 🔸 C1 (Advanced): "With the current market volatility, the interest rate hike is still very much up in the air."