expression
not bad at all; nothing to sneeze at; pretty impressive
Colloquial expression used to say that something or someone is better than expected, not worthless, or has hidden merit. Often used when you initially underestimated something.
あの店、見た目はボロいけど、料理は捨てたもんじゃないよ。
That place looks run-down, but the food is nothing to sneeze at.
彼のアイデアも捨てたもんじゃないね。
His idea isn't half bad, either.