反面

• Reading: はんめん
• Romaji: hanmen
• Formation: Verb plain form / い-Adj / な-Adj な・である / Noun である + 反面
• Kanji breakdown: 反 (はん) — opposite, reverse; 面 (めん) — face, side

Meaning

A conjunction meaning 'on the other hand' or 'while,' used to contrast the positive and negative aspects, or two opposing qualities, of the same person, thing, or situation.

はんめん presents two sides of a single subject. Unlike 一方 (which can compare different subjects), 反面 specifically highlights that one entity possesses contradictory qualities simultaneously. It is frequently used to give a balanced evaluation — acknowledging a strength while pointing out an accompanying weakness, or vice versa. The clause before 反面 states one side, and the clause after states the opposite facet. It appears in both spoken and written Japanese but is slightly more common in written or formal assessments. In some contexts, その反面 is used at the start of the second clause for clarity.

Examples

1. 彼は仕事に厳しい反面、部下への面倒見がよい。 He is strict about work, but on the other hand, he takes good care of his subordinates.
2. リモートワークは自由度が高い反面、孤独感を覚えやすい。 Remote work offers a high degree of freedom, but on the other hand, it's easy to feel isolated.
3. この薬は即効性がある反面、副作用も無視できない。 This medicine works quickly, but on the other hand, the side effects cannot be ignored.

Usage Guide

Context: spoken, written, formal

Tone: analytical

Do Say

• この地域は自然が豊かな反面、交通の便が悪い。
• 彼女は社交的な反面、一人の時間も大切にしている。
• テクノロジーは生活を便利にする反面、プライバシーの問題を生む。

Don't Say

• 彼は親切な反面、彼女は冷たい。(Using 反面 to contrast two different people instead of two sides of the same subject) → 彼は親切な反面、頑固なところもある。
• 天気がいい反面、公園に行った。(Using 反面 without an opposing quality — the second clause is not contradictory) → 天気がいい反面、風が強くて外出しづらかった。

Origin & History

Composed of 反 (opposite, reverse) and 面 (face, side). Literally 'the reverse side,' it has been used as a conjunction to present opposing facets of a single topic since the Meiji era.

Cultural Context

Generation: All ages

Social background: Universal