案|あんan[1]atamadaka (head-high)

1. noun, noun (suffix)idea; plan; proposal; suggestion; (government) bill
   驚おどろいたことに、彼かれは簡単かんたんに案あんを考え出かんがえだした。↗

   To my surprise, he easily came up with a plan.
2. noundraft; rough copy
3. nounexpectation
4. noundesk; stand

• Synonym企画きかくNeutralFor planning concrete events or projects, as in 「イベントを企画する」; it centers on a plan for carrying something out, not an idea floated for discussion.
• Synonym計画けいかくNeutralA worked-out arrangement with methods and steps decided in advance, as in 「旅行の計画」; 「案」 is an idea or draft put forward for discussion, as in 「予算案」.
• Synonym構想こうそうWrittenWritten/formal: thinking out the overall structure and steps of something, whether a whole venture or one essay, as in 「小説の構想」; 「案」 is a proposal put forward.
• Synonym策さくNeutralA countermeasure or tactic for dealing with a problem, as in 「解決策」; it stresses the means of solving it, not the proposal itself.
• Synonym企図きとWrittenWritten/formal: intending or attempting to do something; found mostly in academic papers and news reports.
• SynonymプランNeutralA loanword for a plan or scheme, also a package or pricing deal such as 「料金プラン」; very common in speech.
• Synonym目論見もくろみNeutralA plan you hold in your mind, often with a scheming, calculating nuance, as in 「目論見が外れる」.
• Synonym腹づもりはらづもりCasualColloquial: a plan or intention you have settled on in your own mind, as in 「来年辞める腹づもりだ」.
• Related設計せっけいNeutralDesigning the concrete structure of buildings, machines, or one's life course, as in 「人生設計」.
• Related立案りつあんWrittenWritten/formal: the act of drafting or drawing up a plan, as in 「計画を立案する」; 「案」 is the resulting proposal itself.

Use 「案」 for an idea, draft, or proposal put forward for discussion, as in 「予算案」. For concrete arrangements choose 「計画」 or 「プラン」; for planning an event 「企画」; for thinking out the overall shape of something, be it a venture or a novel, 「構想」; for a means of solving a problem 「策」.

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

1. 考かんがえ。
2. 原案げんあん。
3. 予想よそう。