What does まさか mean?
まさか is a Japanese noun meaning “by no means” in English. It can also be translated as “certainly (not), something unexpected, indeed” depending on context. It is written as まさか in hiragana, and masaka in romaji. This word is part of JLPT N3 vocabulary.
Example sentence
まさかもう彼が来たのではないでしょうね。
He hasn't come already, has he?