What does 打ち消し mean?
打ち消し is a Japanese noun meaning “(gram) negation, denial, negative” in English. It is written as 打ち消し in kanji, うちけし in hiragana, and uchikeshi in romaji. This word is part of JLPT N1 vocabulary.
Example sentence
これが博打だってことは分かってます。
I understand that this is a gamble.