अंदाज़ा नहीं था कि

had no idea that

→ अंदाज़ा
phrase Rare #9,890
had no idea that Used to say that someone did not know or expect something; it introduces a clause.
HI: मुझे अंदाज़ा नहीं था कि तुम यहाँ रहते हो।
EN: I had no idea that you lived here.