flat-out編輯正在努力提供更完整的內容，建議 20 分鐘後再回來看看flat-out副詞 · 1形容詞 · 1flat-out — 副詞副詞1. directly and without hiding anything1.副詞釋義乾脆directly and without hiding anything例句She flat-out refused to help.flat-out — 形容詞形容詞1 解釋1. complete and total1.形容詞釋義徹底的complete and total例句That's a flat-out lie.