表面|ひょうめんhyoumen[3]nakadaka (mid-high)

1. no-adjectivesurface; face
   突然とつぜんの風かぜで池いけの表面ひょうめんが波立なみだった。↗

   A sudden wind agitated the surface of the pond.
2. no-adjectiveoutside; exterior
3. no-adjectiveappearances; superficiality

• SynonymうわべNeutralOutward appearance; often carries a negative nuance of mere show, as in 「上辺だけの付き合い」.
• Synonym外面がいめんNeutralThe outer surface of an object; read 「そとづら」, it means one's manner toward outsiders. Leans toward written, formal prose.
• Synonym見かけみかけNeutralHow something looks from the outside; centers on the impression it gives, as in 「見かけによらず」.
• Synonym表おもてNeutralThe front or outside of something, or public view, as in 「紙の表」「表に出る」; the counterpart of 「裏」.
• SynonymつらCasualRead 「つら」; a rough, colloquial word for the face that can also mean a surface; common in set phrases like 「面の皮」.
• Synonym外側そとがわNeutralThe outside or outer side, the counterpart of 「内側」; the focus is on inside-versus-outside position.
• Synonym表層ひょうそうNeutralA shallow surface layer, as in 「表層雪崩」「表層的な議論」; used mostly in geology or figuratively.
• Synonym見せ掛けみせかけNeutralA deliberately put-on appearance, as in 「見せ掛けの優しさ」; stresses that what is shown is false.
• Synonym外見がいけんNeutralThe outward appearance of a person or thing, as in 「外見で判断する」; mostly about how people look and dress.
• Synonym上っ面うわっつらCasualColloquial for the surface or skin-deep level, with a negative nuance, as in 「上っ面だけの理解」.
• Synonym上面うわつらNeutralRead 「うわつら」; means surface or outward appearance. The wording sounds somewhat old-fashioned.
• Synonym表側おもてがわNeutralThe front or surface side of something, as in 「建物の表側」; the focus is on which side it is on.
• Synonym上っ側うわっかわCasualColloquial for the upper side or surface; actual examples of use are scarce.
• Synonym上側うわかわNeutralThe upper side, as in 「上側の面」; the focus is on top-versus-bottom position.
• Antonym裏面うらめんNeutralThe back or reverse side, the opposite of 「表面」; can also mean hidden facts, the inside story.
• Antonym内部ないぶNeutralThe inside or interior, standing opposite the outer 「表面」.

Use 「表面」 for the outermost layer of an object or for surface-level phenomena. For how something or someone looks, pick 「見かけ」 or 「外見」; for mere show, 「上辺」; for the front side, 「表」. The opposites are 「裏面」 and 「内部」.

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

1. 物体ぶったいの最外さいがい側がわの部分ぶぶん。おもて。
2. 外見がいけん。うわべ。