great depth; great height; 10000 fathoms
Literary or classical term for an immeasurably deep or high place. Often used figuratively to emphasize extreme depth or height.
His scholarship has the depth of 10,000 fathoms.
The sky looked small when looking up from the bottom of the unfathomably deep valley.
bottomless ravine; abyss
Standard kanji form using 尋 (fathom).
Variant using 仞 (an ancient unit of depth/height). Less common.
Compound of 万 (ten thousand) and 尋 (fathom, a traditional unit of depth). The exact historical derivation is uncertain, but the combination conveys an immeasurably large depth or height.