案じる・按じる|あんじるanjiru[0]heiban (flat)

1. ichidan verb, transitive verbto be anxious (about); to be concerned (about); to worry (about); to fear
   母ははは私の将来しょうらいを案あんじている。↗

   Mother is anxious about my future.
2. ichidan verb, transitive verbto think out (e.g. a plan); to work out; to devise; to consider; to ponder
3. ichidan verb, transitive verbto investigate
4. ichidan verb, transitive verbto stroke; to rub; to pat; to grasp (the hilt of one's sword)

• Synonym考慮こうりょNeutralNeutral: taking certain factors or circumstances into account, as in 「事情を考慮する」. It carries no sense of worry, nor of working out a plan.
• Synonym思索しさくWrittenWritten: thinking deeply and systematically, about things like life or problems. It does not carry the worry sense of 「案じる」.
• Synonym思案しあんNeutralNeutral: turning a matter over and trying to make up one's mind; it can also mean worrying, so both senses overlap with 「案じる」. Common in 「思案に暮れる」.
• Synonym思慮しりょWrittenWritten: deep, careful thought with an emphasis on prudence — 「思慮深い」, 「思慮が足りない」. It does not express worry.
• Synonym考えるかんがえるNeutralNeutral: the everyday all-purpose verb for thinking, with the broadest range — considering, holding views, thinking up ideas. For worry, use 「心配する」 or 「案じる」.
• Synonym熟慮じゅくりょWrittenWritten: thinking something over fully and carefully — 「熟慮の末」. It covers only thorough thought, not the worry sense of 「案じる」.
• Synonym案ずるあんずるWrittenAn alternative conjugation of 「案じる」 with the same meaning and usage; fully interchangeable. 「案ずる」 sounds slightly archaic and literary, as in 「身を案ずる」, 「一計を案ずる」.
• Synonym思料しりょうWrittenCareful weighing and judgment, seen mostly in legal and official writing as 「〜と思料する」. It has neither the worry sense of 「案じる」 nor the sense of devising a plan.
• Synonym思い見るおもいみるWrittenTo calm the mind and ponder deeply, seeking to understand; archaic and rare today. It covers neither worry nor devising plans — in everyday speech say 「よく考える」.
• Synonym慮るおもんばかるWrittenWritten: to consider thoroughly or be mindful of, as in 「相手の気持ちを慮る」 or 「将来を慮る」. The emphasis is on thoughtfulness, not worry.
• Synonym勘考かんこうWrittenWritten: careful consideration, rare in modern use. In daily speech say 「よく考える」 or 「熟考」. It does not express worry.
• Synonym考え抜くかんがえぬくNeutralNeutral verb: to keep thinking a problem through to the very end — 「考え抜いた末」. The stress is on thoroughness, not worry.
• Synonym思い巡らすおもいめぐらすNeutralNeutral verb: to mull something over repeatedly from every angle — 「あれこれ思い巡らす」. It has a contemplative feel and no sense of worry.
• Synonym熟考じゅっこうWrittenWritten: thinking something over carefully and repeatedly, close to 「熟慮」. It does not carry the worry sense of 「案じる」.
• Synonym熟思じゅくしWrittenWritten: deep thought aimed at reaching a judgment; rare even in writing. Like 「熟考」 it is a literary word — in daily speech say 「よく考える」.
• Related検討けんとうNeutralNeutral: examining something from many angles and weighing its merits — plans, results, data, problems — as in 「検討中」. It has no sense of worry.
• Related思考しこうWrittenWritten: thinking that follows a logical thread, with an academic flavor — 「思考力」. It refers to thinking itself, without worry or scheming.
• Related考察こうさつWrittenWritten: thinking and studying a subject to clarify it, common in papers and reports — 「考察を加える」. It has no worry sense.
• Related思惟しいWrittenWritten: concentrating the mind to think deeply, found in philosophical and Buddhist contexts. Academic in tone, with no worry sense.

For worrying about someone or working out a plan, use 「案じる」: 「安否を案じる」, 「一計を案じる」. For everyday thinking, 「考える」 is the default; weigh factors with 「考慮」, examine options from many angles with 「検討」, and think things over fully with 「熟慮」. 「案ずる」 is an interchangeable variant of 「案じる」 with a slightly old-fashioned, literary feel. Most of the rest are written-style thinking words — 「思索」, 「思慮」, 「考察」, 「熟考」, 「熟思」, 「思惟」, 「思料」 — while 「思案」 alone also covers worry.

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

1. 心配しんぱいする。
2. じっくり考かんがえる。