思考|しこうshikou[0]heiban (flat)
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- suru verb, transitive verb, intransitive verb, no-adjectivethought; consideration; thinking
Conjugation
| Dictionary form | 思考する(しこうする) |
|---|---|
| Polite (masu) | 思考します(しこうします) |
| Negative (nai) | 思考しない(しこうしない) |
| polite (masen) | 思考しません(しこうしません) |
| classical zu / nu | 思考せず・思考せぬ(しこうせず・しこうせぬ) |
| Past (ta) | 思考した(しこうした) |
| polite (mashita) | 思考しました(しこうしました) |
| Past negative (nakatta) | 思考しなかった(しこうしなかった) |
| polite (masen deshita) | 思考しませんでした(しこうしませんでした) |
| Te form | 思考して(しこうして) |
| Potential | 思考できる(しこうできる) |
| Passive | 思考される(しこうされる) |
| Causative | 思考させる(しこうさせる) |
| Causative passive | 思考させられる(しこうさせられる) |
| Conditional (ba) | 思考すれば(しこうすれば) |
| tara | 思考したら(しこうしたら) |
| Volitional | 思考しよう(しこうしよう) |
| polite (mashou) | 思考しましょう(しこうしましょう) |
| Imperative | 思考しろ(しこうしろ) |
Common forms generated by rule; see the senses for honorific or irregular usage.
- Synonym思索しさくWrittenWritten/formal noun for deep, systematic reflection, as in 「思索にふける」; 「思考」 covers thinking in general.
- Synonym思案しあんNeutralNoun for turning something over as you try to decide; carries a sense of hesitation, as in 「思案に暮れる」.
- Synonym考慮こうりょWrittenWritten/formal noun for taking a factor into account, as in 「事情を考慮する」; it weighs circumstances rather than naming thinking itself.
- Synonym思慮しりょWrittenWritten/formal noun for prudent, careful thinking; stresses steadiness, as in 「思慮深い」.
- Synonym考えるかんがえるNeutralThe everyday verb for thinking or considering something; by far the most common, stressing deliberate, conscious thought.
- Synonym思うおもうNeutralVerb for thinking or feeling that something is so; centres on subjective impressions and emotions rather than reasoning.
- Synonym思惟しいWrittenWritten/formal noun for concentrated deep thinking, mostly in philosophical or Buddhist contexts and rare today; 「思考」 is general.
- Related検討けんとうNeutralNoun for examining plans, data or possibilities from every angle, as in 「検討中」; 「思考」 is the mental activity itself.
- Related思料しりょうWrittenWritten/formal noun for careful deliberation and judgement; legal-official in flavour and rare today.
- Related思い見るおもいみるWrittenWritten/formal verb for reflecting deeply; old-fashioned and rarely seen now — say 「考える」 in everyday speech.
- Related慮るおもんばかるWrittenWritten/formal verb for being mindful of someone's situation or feelings, as in 「相手の気持ちを慮る」; 「思考」 is thinking itself.
- Related慮りおもんぱかりWrittenWritten/formal noun for careful thought and concerns; not often used.
- Antonym直感ちょっかんNeutralAntonym: grasping things instantly by feel rather than by reasoned 「思考」.
- Antonym無思考NeutralAntonym: acting without thinking, following blindly — the opposite of 「思考」.
Use 「思考」 for rational thinking and thought as an activity, as in 「思考力」 and 「プラス思考」. For deep, systematic reflection pick 「思索」; for mulling over a decision 「思案」; for weighing factors 「考慮」; for examining plans or data 「検討」. In daily speech 「考える」 is the default, and 「直感」 is intuition instead of thought.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only


