思案|しあんshian[1]atamadaka (head-high)

1. noun, suru verb, transitive verbcareful thought; consideration; deliberation; reflection; rumination; pondering
   ここが思案しあんのしどころだ。↗

   This is the point we need to think about.

• Synonym考慮こうりょNeutralTaking a factor into account, as in 「事情を考慮する」; 「思案」 is mulling something over to work out what to do.
• Synonym思慮しりょWrittenWritten word for deep, careful thought, as in 「思慮深い」; the stress is on sound judgment and discretion rather than turning a problem over.
• Synonym思考しこうNeutralThinking as a mental process, often in academic contexts, as in 「思考力」; 「思案」 is mulling over a concrete matter to find a way.
• Synonym検討けんとうNeutralStudying and weighing a plan or proposal, as in 「検討中」; it has a work-related, businesslike ring, while 「思案」 is turning a problem over to find a way.
• Synonym熟慮じゅくりょWrittenWritten word for careful deliberation, as in 「熟慮の末」; 「思案」 suggests turning a problem over in search of a solution.
• Synonym案じるあんじるWrittenWritten verb meaning to worry about someone or to devise a plan, as in 「一計を案じる」.
• Synonym考えるかんがえるNeutralThe all-purpose verb for thinking; 「思案」 specifically means mulling something over to come up with an idea.
• Synonym思うおもうNeutralThe everyday verb for feeling or thinking that something is so; 「思案」 is deliberate pondering over a matter.
• Synonym思惟しいWrittenA written, philosophical term for abstract, concentrated thought; 「思案」 is pondering a concrete matter to work out a plan.
• Synonym熟考じゅっこうWrittenWritten word for thinking something over carefully, close to 「熟慮」; 「思案」 stresses racking one's brains over a specific problem.
• Related考察こうさつWrittenWritten and academic: examining and studying a subject, as in 「考察を加える」; 「思案」 is personal pondering over what to do.
• Related思索しさくWrittenSystematic, deep thinking, often on philosophical questions; 「思案」 is mulling over a concrete matter at hand.
• Related思い巡らすおもいめぐらすNeutralA verb for thinking over all sorts of possibilities; very close to 「思案」 in meaning.
• Related考え抜くかんがえぬくNeutralTo think something through to the very end, as in 「考え抜いた結論」; the emphasis is on thinking it out completely.
• Related熟思じゅくしWrittenWritten and rare: thinking deeply before judging; 「思案」 is more common and stresses mulling something over.
• Related勘考かんこうWrittenA rare written word for careful thought; 「思案」 is the usual choice for pondering a matter.
• Related慮るおもんばかるWrittenWritten verb for considering thoughtfully, often another's situation, as in 「相手の立場を慮る」.
• Related省察せいさつWrittenWritten word for reflecting on oneself, as in 「自己省察」; 「思案」 is about working out what to do, not self-examination.
• Related思い回すおもいまわすNeutralRare verb for thinking this way and that, or for recalling the past; close to 「思案」 in its pondering sense.
• Antonym即断そくだんWrittenAntonym: a written word for a snap decision, the opposite of the drawn-out pondering of 「思案」.

For thinking in general, say 「考える」. Use 「思案」 for mulling something over as you search for a solution — 「思案に暮れる」, 「思案顔」. For careful deliberation choose 「熟慮」, and for a snap decision 「即断」. To weigh a factor or a plan, 「考慮」 or 「検討」 fit better.

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

1. あれこれと考かんがえること。
2. 心配しんぱい。