fraught with danger; "dangerous waters"; "a parlous journey on stormy seas"; "a perilous voyage across the Atlantic in a small boat"; "the precarious life of an undersea diver"; "dangerous surgery followed by a touch-and-go recovery"危険を伴うさま危険
例:The precarious life of an undersea diver. 海中ダイバーの危険な人生。
affording no ease or reassurance; "a precarious truce"安楽または安心の余裕がない心許ない
例:a precarious truce 不安定な停戦協定
not secure; beset with difficulties; "a shaky marriage"安全でない不安定