とりけす
to cancel
予約を取り消しました。
I cancelled the reservation.
Practice distinguishing this from similar verbs. Context clues in the sentence will guide you. A core N4 word that builds on N5 foundations.
From the JLP Quiz question bank — the word in the form it is actually tested in.
彼は一度口にした___、絶対に意見を曲げない。
Answer: が最後