浅はか・浅墓|あさはかasahaka[0]heiban (flat)

1. na-adjectiveshallow; superficial; thoughtless; short-sighted; foolish; silly
   私はあさはかにも彼かれが私を助たすけてくれるんだなあと思おもった。↗

   I foolishly imagined that he was going to help me.

• Synonym軽々しいかるがるしいNeutralRash and imprudent, as in 「軽々しく口にするな」.
• Synonym軽はずみかるはずみNeutralSpur-of-the-moment rashness, as in 「軽はずみな行動」.
• Related軽薄けいはくNeutralFrivolous, insincere speech and behavior, as in 「軽薄な態度」; the focus is flippancy rather than shallow thought.
• Related上っ調子うわっちょうしNeutralFlippant, not fully serious in speech or manner, as in 「上っ調子な話しぶり」; the focus is flightiness and lack of gravity.
• Related軽率けいそつNeutralRash and imprudent, as in 「軽率な発言」; the focus is acting without caution.
• Related無謀むぼうNeutralReckless without regard for the consequences, as in 「無謀な計画」; the focus is risky daring.
• Related非常識ひじょうしきNeutralLacking common sense or proper manners, as in 「非常識な時間」.
• Related不見識ふけんしきWrittenWritten: lacking insight and discretion; the focus is judgment that looks improper.
• RelatedそそっかしいCasualColloquial: hasty and careless, as in 「そそっかしい人」.
• Related愚かおろかNeutralFoolish or stupid, of people, judgments, or acts, and also absurd; 「浅はか」 is specific to shallow, ill-considered thinking.
• Related心無いこころないNeutralInconsiderate and unkind toward others, as in 「心ない言葉」; the focus is coldness, not shallow thinking.
• Related無分別むふんべつNeutralActing without weighing right and wrong or what matters, as in 「無分別な行動」; the focus is poor judgment.
• Related無考えむかんがえCasualColloquial: acting rashly without thinking; the focus is simply not using one's head.
• RelatedちゃらんぽらんCasualColloquial: slapdash and irresponsible; the focus is a careless, anything-goes attitude.
• Related軽佻浮薄けいちょうふはくWrittenFour-character idiom for frivolous shallowness; written/formal prose and heavy in tone.
• Related卒爾そつじWrittenWritten and somewhat old-fashioned: abrupt and hasty; the focus is suddenness, not shallowness.
• Related浮薄ふはくWrittenWritten: frivolous and fickle; the focus is instability and insincerity.
• Related軽佻けいちょうWrittenWritten: flippant and frivolous; mostly seen in the set phrase 「軽佻浮薄」.
• RelatedおっちょこちょいCasualColloquial noun for a scatterbrain; used with affectionate teasing, of people rather than ideas.
• RelatedうかつNeutralCareless or inattentive, as in 「迂闊だった」; the focus is a lapse of attention rather than shallow thinking.
• Related向こう見ずむこうみずNeutralBarreling ahead without thought of the consequences, as in 「向こう見ずな若者」.
• Related尻軽しりがるNeutralFrivolous in manner, and also sexually inconstant; strongly derogatory.
• Related無思慮むしりょWrittenWritten: lacking thought; rare, with 「軽率」 the everyday choice.
• Antonym慎重しんちょうNeutralAntonym: careful and prudent, opposed to shallow, hasty thinking.
• Antonym深謀しんぼうWrittenAntonym: a deeply laid, far-sighted plan; written/formal, opposed to shallow thinking.

Use 「浅はか」 for shallow, ill-considered thinking, as in 「浅はかな考え」. For frivolous speech or behavior choose 「軽薄」, for a moment's rashness 「軽はずみ」, and for careless oversight 「うかつ」; the antonyms are 「慎重」 and, in formal prose, 「深謀」. Most other synonyms are narrower in scope or register-marked.

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

1. 思慮しりょの足たりないさま。