思索|しさくshisaku[0]heiban (flat)
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Definitions
- noun, suru verb, transitive verbspeculation; thinking; meditation
Conjugation
| Dictionary form | 思索する（しさくする） |
|---|---|
| Polite (masu) | 思索します（しさくします） |
| Negative (nai) | 思索しない（しさくしない） |
| polite (masen) | 思索しません（しさくしません） |
| classical zu / nu | 思索せず・思索せぬ（しさくせず・しさくせぬ） |
| Past (ta) | 思索した（しさくした） |
| polite (mashita) | 思索しました（しさくしました） |
| Past negative (nakatta) | 思索しなかった（しさくしなかった） |
| polite (masen deshita) | 思索しませんでした（しさくしませんでした） |
| Te form | 思索して（しさくして） |
| Potential | 思索できる（しさくできる） |
| Passive | 思索される（しさくされる） |
| Causative | 思索させる（しさくさせる） |
| Causative passive | 思索させられる（しさくさせられる） |
| Conditional (ba) | 思索すれば（しさくすれば） |
| tara | 思索したら（しさくしたら） |
| Volitional | 思索しよう（しさくしよう） |
| polite (mashou) | 思索しましょう（しさくしましょう） |
| Imperative | 思索しろ（しさくしろ） |
Common forms generated by rule; see the senses for honorific or irregular usage.
Synonyms & antonyms
- Synonym思考しこうNeutralNeutral word for thinking and thought processes, as in 「思考力」; unlike 「思索」 it does not stress deep, systematic reflection.
- Synonym考察こうさつWrittenWritten, academic word for examining and studying a subject; unlike 「思索」 it does not stress deep, orderly thought.
- Synonym瞑想めいそうNeutralNeutral word for meditation with closed eyes and a stilled mind; used for religious practice and also for relaxation or focus, unlike the systematic depth of 「思索」.
- Synonym熟慮じゅくりょNeutralNeutral word for careful deliberation, typically before a decision; it stresses prudence, while 「思索」 stresses deep, systematic thought.
- Synonym考え込むかんがえこむNeutralNeutral verb for sinking into deep thought or brooding over something; unlike 「思索」 it does not stress systematic, orderly thinking.
- Synonym案じるあんじるNeutralNeutral verb that chiefly means to worry about something but can also mean to think it over; unlike 「思索」 it does not stress systematic depth.
- Synonym考えるかんがえるNeutralThe all-purpose neutral verb for thinking; far broader in use than 「思索」, which stresses deep, systematic reflection.
- Synonym思慮しりょNeutralNeutral word for careful thought with a sense of discretion and measure, as in 「思慮深い」; unlike 「思索」 it does not stress orderly, step-by-step depth.
- Synonym思うおもうNeutralThe everyday verb for thinking or feeling; the most common choice in speech, far broader and lighter than the deep reflection of 「思索」.
- Synonym思い巡らすおもいめぐらすNeutralA neutral verb for mulling things over and letting thoughts range widely; it stresses thinking from many angles, while 「思索」 stresses deep, orderly thought.
- Synonym考え抜くかんがえぬくNeutralColloquial verb for thinking a problem through to the very end; unlike 「思索」 it does not stress systematic, orderly thought.
- Synonym思惟しいWrittenWritten word for thought or speculation with a philosophical flavor; unlike 「思索」 it does not stress deep, orderly thinking.
- Synonym熟考じゅっこうNeutralNeutral word for careful deliberation; it stresses weighing things cautiously, while 「思索」 stresses deep, systematic thought.
- Synonym沈思ちんしWrittenWritten word for being sunk in deep thought; it stresses absorption in musing, unlike the orderly depth of 「思索」.
- Synonym黙考もっこうWrittenWritten word for thinking in silence, mostly seen in the set phrase 「沈思黙考」; unlike 「思索」 it does not stress systematic depth.
- Synonym黙想もくそうWrittenWritten word for silent contemplation; the eyes need not be closed, while 「思索」 stresses deep, orderly thinking.
- Synonym黙念もくねんWrittenWritten, old-fashioned word for thinking in silence; unlike 「思索」 it does not stress deep, orderly thought.
- Synonym熟思じゅくしWrittenWritten word for deliberate, careful thought; unlike 「思索」 it does not stress deep, orderly thinking.
- Synonym静思せいしWrittenWritten word for thinking with a calm, settled mind; unlike 「思索」 it does not stress systematic depth.
- Synonym黙思もくしWrittenWritten word for thinking quietly without a word; unlike 「思索」 it does not stress deep, orderly thought.
- Synonym観想かんそうWrittenWritten word for fixing the mind on one thing in deep contemplation; religious in flavor, unlike the orderly depth of 「思索」.
- Synonym三思さんしWrittenWritten word for thinking something over again and again; unlike 「思索」 it does not stress deep, orderly thought.
- Synonym沈吟ちんぎんWrittenWritten word for humming softly or sinking into musing; unlike 「思索」 it does not stress deep, orderly thought.
- Synonym深慮しんりょWrittenWritten word for deep, meticulous consideration; 「思索」 stresses systematic depth, this stresses thorough, careful weighing.
- Synonym思い入るおもいいるWrittenWritten, old-fashioned verb for pondering something at length; unlike 「思索」 it does not stress deep, orderly thought.
- Synonym思い回すおもいまわすNeutralNeutral verb for mulling things over or recalling the past; unlike 「思索」 it does not stress systematic, orderly thinking.
- Related観照かんしょうWrittenWritten word for objectively contemplating the essence of things; aesthetic in flavor, unlike the systematic depth of 「思索」.
- Related省察せいさつWrittenWritten word for reflecting on oneself and weighing right and wrong; unlike 「思索」 it does not stress systematic depth.
Use 「思索」 for deep, systematic thinking; it leans toward written style, as in 「思索にふける」. In everyday speech say 「考える」. For thinking as a mental process use 「思考」, for careful deliberation 「熟考」, for being sunk in thought 「沈思」, and for meditation 「瞑想」.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only
Japanese definitions
Kanji in this word
English equivalents
See also
