without reasonable excuse
もっともな言い訳なしに
without recourse
償還請求に応ぜず(◆裏書人・振出人が手形に書く文句)
without regard to age or gender
年齢・性別を問わず
without remorse
容赦なく
without restriction
無制限に
without scruple
平気な[で];ぬけぬけと
without shame
恥ずかしげもなく
without so much as a word of thanks
ありがとうも言わずに
without speaking to anyone else
他の人に一言も話さないで
without [with no] stint
惜しみなく,骨身を惜しまず