当たり前・当り前|あたりまえatarimae[0]heiban (flat)

1. no-adjective, na-adjectivenatural; reasonable; obvious
   我々われわれは彼かれが成功せいこうしたのは当たり前あたりまえだと思おもった。↗

   We took his success for granted.
2. no-adjective, na-adjectiveusual; common; ordinary; commonplace; the norm
   この問題もんだいはあたりまえのやり方かたでは解決かいけつしない。↗

   You cannot solve this problem in an ordinary way.

• Synonym自然しぜんNeutralPoints to what is unaltered and left to take its own course; 「当たり前」 stresses that something is only right or unsurprising.
• Synonym一般的いっぱんてきNeutralDescribes what is general or common, in a fairly objective way; 「当たり前」 adds the subjective sense that it ought to be so.
• Synonym尋常じんじょうNeutralMostly used in the negative 「尋常ではない」, meaning ordinary; 「当たり前」 stresses what is only natural.
• Synonym正常せいじょうNeutralSays a state is normal with nothing amiss, often of machines or the body; 「当たり前」 stresses that something is reasonable.
• Synonym通常つうじょうNeutralCovers the usual case or normal hours, e.g. 「通常営業」, 「通常は」; 「当たり前」 stresses what is only to be expected.
• Synonym並大抵なみたいていNeutralMeans ordinary or run-of-the-mill and usually appears with a negative, e.g. 「並大抵のことでは驚かない」; 「当たり前」 is mostly used in positive statements.
• Synonym普通ふつうNeutralThe most common word for plain and ordinary; 「当たり前」 puts more weight on something being natural and unsurprising.
• Synonym凡ぼんWrittenA written/formal word for mediocre, mostly as a prefix in 「凡人」, 「凡作」; seldom used on its own.
• Synonym常識的じょうしきてきNeutralDescribes what accords with common sense, e.g. 「常識的な判断」; 「当たり前」 is the more colloquial choice.
• Synonym平均的へいきんてきNeutralSays something sits at the average level, a rather statistical description; 「当たり前」 stresses what is only natural.
• Related平凡へいぼんNeutralSuggests something plain and unremarkable, with a slight tinge of mediocrity; 「当たり前」 is about what goes without saying.
• Related人並みひとなみNeutralMeans on a level with ordinary people and passable, e.g. 「人並みの生活」; 「当たり前」 stresses what is only to be expected.
• Related月並みつきなみNeutralDescribes the trite, conventional and unoriginal, with a critical nuance, e.g. 「月並みな表現」; 「当たり前」 has no such negative tinge.
• Related並なみNeutralIndicates a middling or standard grade, e.g. 「並の人」, 「並盛り」; 「当たり前」 stresses what goes without saying.
• RelatedノーマルNeutralA loanword for a normal or standard state, e.g. 「ノーマルタイヤ」; 「当たり前」 stresses that something is reasonable.
• Related一般いっぱんNeutralCovers what is general or universal, and also the general public; 「当たり前」 stresses what is only to be expected.
• Related通例つうれいWrittenA written/formal word for custom or the usual practice; 「当たり前」 stresses what is taken for granted.
• Related通俗つうぞくNeutralMeans easy for the general public to grasp and accept, e.g. 「通俗小説」; this differs from the 'goes without saying' sense of 「当たり前」.
• RelatedありきたりNeutralSuggests something seen everywhere and devoid of originality, with a dismissive nuance; 「当たり前」 stresses that something is reasonable.
• Related凡常ぼんじょうWrittenA rare word of written/formal prose meaning plain and ordinary; in daily speech say 「平凡」 or 「普通」.
• Related十人並みじゅうにんなみNeutralMostly describes looks or ability as middling, e.g. 「十人並みの器量」; 「当たり前」 stresses what is only natural.
• Related日常的にちじょうてきNeutralRefers to things belonging to daily life, e.g. 「日常的な光景」; 「当たり前」 stresses that something ought to be so.
• Antonym異常いじょうNeutralThe antonym on the normal–abnormal axis: describes something abnormal or unusual.
• Antonym特別とくべつNeutralThe antonym on the ordinary–special axis: describes something special or out of the ordinary.

Use 「当たり前」 for what is natural, obvious, or taken for granted. For plain everyday ordinariness pick 「普通」; for something unremarkable or mediocre, 「平凡」; for the trite and unoriginal, 「月並み」 or 「ありきたり」; for a normal state of a machine or the body, 「正常」. The antonyms are 「異常」 (abnormal) and 「特別」 (special).

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

1. そうであるべきこと。誰だれが考かんがえても、もっともであること。
2. 特段とくだん変かわっていないこと。ごく普通ふつうであること。