先入観|せんにゅうかんsennyuukan[3]nakadaka (mid-high)

1. nounpreconception; preconceived notion; prejudice
   そういうの、先入観せんにゅうかんっていうんだよっ！体験たいけんしたこと無ないのに、決め付きめつけるのはよくないっ！↗

   That's what they call 'prejudice'! It's wrong to make your mind up on something you've never experienced!

• Synonym偏見へんけんNeutralA one-sided, unfair view, often discriminatory, as in 「人種的偏見」; 「先入観」 stresses the impression formed in advance.
• Synonym先入見せんにゅうけんWrittenA written-form synonym of 「先入観」 with the same meaning, but used less often.
• Synonym先入主せんにゅうしゅWrittenWritten style; a preconceived idea, mostly seen in the phrase 「先入主となる」.
• Related思い込みおもいこみCasualA subjective assumption, as in 「勝手な思い込み」. Colloquial; stresses personally taking something for granted rather than a pre-formed view that blocks judgment.
• Related偏りかたよりNeutralLeaning toward one side or imbalance, also bias; stresses uneven distribution rather than a view held in advance.
• RelatedバイアスNeutralLoanword for bias in judgment, as in 「認知バイアス」; at home in both academic and everyday contexts.
• Related僻見へきけんWrittenA written, rarely used word for a biased view; in ordinary usage 「偏見」 is the normal choice.
• Related偏執へんしゅうWrittenA written word for clinging to one's own thinking and rejecting others' views; stresses stubbornness of character.
• Related偏った考えかたよったかんがえNeutralA plain, descriptive phrase for a one-sided view that weighs only one side; it says nothing about the view having been formed beforehand, as 「先入観」 does.

Use 「先入観」 for a pre-formed impression that hinders objective judgment, as in 「先入観を捨てる」. For a subjective assumption say 「思い込み」; for a one-sided, unfair view 「偏見」; for bias in judgment 「バイアス」. 「偏った考え」 plainly describes a one-sided view, 「偏り」 an imbalance; 「先入見」「先入主」「僻見」 are written.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. ある物事ものごとに対たいしてあらかじめ抱いだいている見解けんかいやイメージで、自由じゆうな発想はっそうを妨さまたげるもの。思い込おもいこみ。