まんまとsuccessfully, fairly, artfully, nicely, thoroughly

詐欺(さぎ)師(し)の策略(さくりゃく)にまんまとひっかかった。

I artfully fell for the scam artist's scheme. {successfully, fairly, artfully, nicely, thoroughly}

よっしゃ！あいつ俺(おれ)の計画(けいかく)にまんまと騙(だま)された！

Alright! He fell for my plan hook, line, and sinker! {successfully, fairly, artfully, nicely, thoroughly}

詐欺(さぎ)師(し)にまんまと騙(だま)されて貯金(ちょきん)がゼロになってしまった。

I was artfully deceived by a scammer and my savings have been reduced to zero. {successfully, fairly, artfully, nicely, thoroughly}

まんまと追(お)っ手(て)を逃(のが)れた犯人(はんにん)は今(いま)ごろ喜(よろこ)んでいることでしょう。

The criminal who artfully eluded his pursuers is probably rejoicing by now. {successfully, fairly, artfully, nicely, thoroughly}

こんな見(み)え見(み)えの罠(わな)にまんまと引(ひ)っかかるなんて…馬鹿(ばか)だなぁ…。

To fall so thoroughly for such an obvious trap... I'm such an idiot... {successfully, fairly, artfully, nicely, thoroughly}