vague or not clearly defined or stated; "must you be so indefinite?"; "amorphous blots of color having vague and indefinite edges"; "he would not answer so indefinite a proposal"あいまいな、はっきりと定義されないまたは述べられない有耶無耶
例:amorphous blots of color having vague and indefinite edges あいまいで不明確な縁を持つ色の無定形のしみ