鈍間

のろま
blockhead
dunce

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のろま【鈍間】

a dolt; a blockhead; a dimwit; a twit; a slowcoach; 《米》 a slowpoke.

～な stupid; dull-witted; slow; muddle-headed.

●こののろま野郎め! You dimwit! | Silly twit!

・あの男は何をするにものろまだ. He does everything at a snail's pace. | He is awfully slow with everything he does.