ミステリーmisuterii

1. nounmystery
   このミステリーのトリックは、奇想天外きそうてんがいだ。↗

   This mystery has a plot twist that's completely novel.

• Synonym謎なぞNeutralNative Japanese word for something whose truth is unknown, or a riddle, as in 「謎を解く」; the most common everyday choice. 「ミステリー」 can also mean mystery fiction.
• Synonym神秘しんぴWrittenWritten/formal word for mysteries beyond human intellect, as in 「自然の神秘」, with a solemn, profound feel; 「ミステリー」 leans toward puzzles and suspense.
• Synonym不可思議ふかしぎWrittenWritten/formal word for things beyond understanding, as in 「不可思議な出来事」; stronger than 「不思議」. 「ミステリー」 leans toward puzzles and deduction.
• Synonym不可解ふかかいWrittenWritten/formal word describing something baffling, as in 「不可解な行動」; used mostly as an adjectival noun, while 「ミステリー」 is a noun for a puzzle or mystery fiction.
• Synonym推理小説すいりしょうせつNeutralNeutral word naming the mystery/detective novel genre itself, as in 「推理小説作家」; 「ミステリー」 covers such works but can also mean a puzzle.
• Synonym不思議ふしぎNeutralThe most common everyday word for something wondrous or inexplicable, as in 「不思議な体験」; 「ミステリー」 leans toward puzzles or mystery fiction.
• Synonym怪かいWrittenWritten/formal word for the strange and eerie, rarely used alone and mostly seen in compounds like 「怪談」 and 「怪奇」; 「ミステリー」 stands alone.
• Related怪奇かいきWrittenWritten/formal word for the bizarre and eerie, as in 「怪奇現象」; 「ミステリー」 centers on puzzles and suspense and is not necessarily eerie.
• RelatedクライムストーリーNeutralLoanword for stories, novels or films built around crime; 「ミステリー」 centers on solving a puzzle and need not involve crime at all.
• Related怪事かいじWrittenWritten/formal word for a strange, puzzling event, rare in modern use; say 「不思議なこと」 in daily speech. 「ミステリー」 leans toward puzzles and deduction.

Use 「ミステリー」 for mysteries and mystery works, as in 「ミステリー小説」. For everyday puzzles pick 「謎」, for wondrous things 「不思議」, and for the genre specifically 「推理小説」; 「クライムストーリー」 is a story built around crime, and 「神秘」「不可思議」「不可解」「怪奇」「怪事」「怪」 are written/formal words with their own nuances.

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

1. 不思議ふしぎなこと。神秘的しんぴてきなこと。なぞ。
2. 秘跡ひせき劇げき。
3. 推理すいり小説しょうせつ。