思慮|しりょshiryo[1]atamadaka (head-high)

1. noun, suru verb, transitive verbprudence; discretion; thought; consideration
   彼かれの思慮しりょの無なさには驚おどろいた。↗

   He was amazed at his foolishness.

• Synonym考慮こうりょNeutralEveryday word for weighing or taking a factor into account; unlike 「思慮」, it does not stress careful, prudent judgment.
• Synonym思案しあんNeutralPondering something back and forth, as in 「思案に暮れる」; 「思慮」 stresses prudent, well-rounded judgment.
• Synonym思索しさくWrittenWritten word for deep, orderly thinking, often on philosophical questions.
• Synonym思考しこうNeutralThinking as a process of logical reasoning; unlike 「思慮」, it does not stress prudence or thoroughness.
• Synonym熟慮じゅくりょWrittenWritten word for full, thorough consideration, often as 「熟慮の末」; 「思慮」 stresses prudent judgment itself.
• Synonym案じるあんじるNeutralLike 「案ずる」, meaning to worry or to work something out, but the more common of the two.
• Synonym了見りょうけんNeutralColloquial word for a person's thinking or outlook, often derogatory, as in 「了見が狭い」.
• Synonym熟考じゅっこうWrittenWritten word for mulling something over carefully and at length before deciding.
• Related考察こうさつNeutralAnalysis and investigation of a subject; typical in academic papers and reports.
• Related検討けんとうNeutralExamining a matter from many angles, weighing its merits and drawbacks; standard in work settings.
• Related考えるかんがえるNeutralThe everyday verb for thinking; far more colloquial than the noun 「思慮」.
• Related省察せいさつWrittenWritten word for reflecting on one's own conduct; self-examination rather than judgment of affairs.
• Related思料しりょうWrittenRare written word, used mostly in official documents as 「〜と思料する」.
• Related案ずるあんずるNeutralVerb for worrying over something or devising a plan; leans toward anxiety and is more colloquial than 「思慮」.
• Related思議しぎWrittenWritten word for conjecture; rarely used alone, appearing chiefly in 「不可思議」.
• Related勘考かんこうWrittenRare written word for careful thought, synonymous with 「熟考」; seldom encountered.
• Related考え抜くかんがえぬくNeutralVerb for thinking a problem through to the very end; 「思慮」 is a noun stressing prudent judgment.
• Related思い巡らすおもいめぐらすNeutralPondering something over and over from every angle, with a literary flavor.
• Related思惟しいWrittenWritten word for the act of thinking itself, with philosophical or Buddhist overtones.
• Related慮るおもんばかるWrittenWritten verb for thinking things through with others in mind; stresses consideration for people.
• Related熟思じゅくしWrittenRare written word synonymous with 「熟慮」; seldom encountered.
• Related慮りおもんぱかりWrittenRare written noun for thoughtfulness and consideration toward others.
• Antonym軽率けいそつNeutralAntonym: acting rashly without thinking, the opposite of 「思慮」's careful judgment.
• Antonym無思慮むしりょWrittenWritten antonym: thoughtlessness, the exact opposite of careful, prudent 「思慮」.

Use 「思慮」 for careful, prudent thinking and judgment, typically as 「思慮深い」 or 「思慮分別」. For taking a factor into account choose 「考慮」; for racking your brains over something, 「思案」. To weigh pros and cons at work use 「検討」, and 「考察」 for analysis in papers and reports. The everyday verb for thinking is 「考える」. Many alternatives—「熟慮」, 「熟考」, 「思索」, 「省察」, 「思惟」, 「慮る」—belong to written style. 「了見」 is colloquial and often derogatory, while 「軽率」 and 「無思慮」 are its antonyms.

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

1. あることについて、深ふかく考かんがえ、思おもいをめぐらすこと。