研究社 新和英中辞典

おもいこむ 思い込む

〈…のつもりでいる〉 be under the impression that…; imagine that…; 《口語》 get it into one's head that…; be convinced that…; be possessed with the idea that… (固く信じて)

〈心を注ぐ〉 set one's heart on 《a matter》; be bent 《on doing》

無論…のことと思い込む

take it for granted that….

用例

あの男はいったんこうと思い込んだらいつでもああなんだ. He's always like that once he gets an idea into his head. いったんこうと思い込んだら最後彼は決して決心を変えない. Nothing can make him change his mind once he has reached a decision.

ハイパー英語辞書

思い込む

imagine

JMdict

思い込む

読み方：おもいこむ

文法情報	（動詞マ行五段活用、自動詞）
対訳	to be under impression that; to be convinced that; to imagine that; to set one's heart on; to be bent on

EDR日英対訳辞書

思い込む

読み方 オモイコム

presume

英語イディオム表現辞典

（～と）思い込む；頭から信じる

訳語 get it into one's head that

斎藤和英大辞典

思い込む

読み方 おもいこむ

他動詞

1

（＝頑固に思う）to be possessed with （an idea）; to be obsessed with （a notion）

用例

彼は妙なことを思い込んでいる
He is obsessed with a strange notion―possessed with a strange notion―A strange notion has taken possession of his mind―taken hold of his mind.

一途にそう思い込んでいる
The notion has taken firm hold of his mind.

2

（＝執心する）to set one's heart on （anything）; to be bent on （anything）; to be determined （to do or on anything）

用例

彼はあの地位を得ようと思い込んでいるらしい
He seems to have set his heart on securing the position.

彼はいったんこうと思い込むとどうしても動かない
Once he is bent on anything, nothing can turn him from it.

思い込んだらできないことは無い
A man who is determined to do anything, can do it
Nothing is impossible to the man who can will.

3

（＝思い立つ）to take into one's head

用例

彼は相場をやってみようと思い込んだ
He took it into his head to engage in speculation.

Weblio英和対訳辞書

思い込む

be under impression that; be bent on; set one's heart on; imagine that; be convinced that

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