Trang chủ/JLPT N1/Từ vựng/てっきりてっきりN1🔊☆ Lưu vào danh sáchてっきりNghĩa—Câu ví dụてっきりあなたが我々といっしょに来られるものと思っていました。I took it for granted that you would come with us.