絶壁|ぜっぺきzeppeki[0]heiban (flat)

1. nounprecipice; cliff
2. nounflat head

• Synonym断崖だんがいWrittenWritten/formal: a steep cliff. Very often paired with 「絶壁」 in the set phrase 「断崖絶壁」.
• Synonym懸崖けんがいWrittenWritten and literary: an overhanging cliff. Also names a bonsai style with branches and leaves cascading below the pot, as in 「懸崖作り」.
• Synonym切り岸きりぎしNeutralA steep bank or slope where the ground rises abruptly, as along a river; used less often. 「絶壁」 is a cliff rising sheer like a wall.
• AntonymなだらかNeutralDescribes a gentle slope or gradual change; the opposite of the steepness of 「絶壁」.
• Antonym緩斜面かんしゃめんWrittenWritten/formal: a gentle, easy-to-walk slope; the opposite of 「絶壁」.

For a sheer, wall-like cliff use 「絶壁」 or 「断崖」; the two often combine as 「断崖絶壁」. Colloquially 「絶壁」 also jokingly describes a flat back of the head, as in 「絶壁頭」. For a gentle slope say 「なだらか」.

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

1. 壁かべのように切り立きりたった崖がけ。