Impossible; not able to be done or achieved due to conditions, capabilities, or circumstances.
物理法則に反することは不可能だ。
Anything that contradicts the laws of physics is impossible.
短期間での達成は現実的に不可能に近い。
Achieving it in a short period is practically close to impossible.
彼を説得するのは簡単ではなく、ほとんど不可能だ。
Convincing him is not easy and is almost impossible.