(1)根拠のない理由や事実に
(2)without a basis in reason or fact; "baseless gossip"; "the allegations proved groundless"; "idle fears"; "unfounded suspicions"; "unwarranted jealousy"
さらに詳しく
(1)ばかげた
(2)不条理な
(3)空想的で非現実的な
(4)滑稽な、愚かな
(5)根拠のない理由や事実に
