論理|ろんりronri[1]atamadaka (head-high)

1. nounlogic
   どうするかを決きめるときは、論理ろんりではなく本能ほんのうを当あてにする。↗

   In making a decision, I rely not on logic but on instinct.

• SynonymロジックNeutralLoanword for logic, at home in business and IT contexts; in everyday writing 「論理」 is the usual choice.
• Synonym論法ろんぽうWrittenWritten/formal word for a way of arguing or reasoning, as in 「三段論法」; stresses the form the reasoning takes.
• Synonym理屈りくつCasualColloquial word for reasons or logic; also strained, self-serving arguments, as in 「理屈をこねる」, which is derogatory.
• Related理論りろんNeutralA theory: a system built up from principles. 「論理」 instead is about whether a line of thought holds together.
• Related立論りつろんWrittenWritten/formal word for stating one's argument and backing it with reasons; centers on the process of arguing rather than logic itself.
• Antonym非論理WrittenWritten/formal term for illogic — reasoning that lacks coherent structure; the direct opposite of 「論理」.

For coherent thinking or argument, use 「論理」, as in 「論理的」 and 「論理が飛躍する」. Use 「ロジック」 for the loanword in business/IT, 「論法」 for methods of reasoning, 「理屈」 in casual talk, and 「非論理」 for the opposite.

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

1. 議論ぎろんや思考しこうを進すすめていく筋道すじみち。
2. 事物じぶつの間あいだの法則ほうそく的てきな繋つながり。
3. 論理学ろんりがく。