1.
bottomless; limitless; endless; insatiable
Describes something that seems to have no bottom or limit. Used both literally (a very deep place) and figuratively (an appetite, energy, or capacity that seems unlimited). Often carries a sense of awe or exasperation.
Composed of 底 (bottom) + なし (without). Functions as a の-adjective modifying nouns: 底なしの～. Can also be written 底無し.
Common collocations
- 底なしの沼: bottomless swamp
- 底なしの体力: limitless stamina
- 底なしの食欲: insatiable appetite
- 底なしの楽天家: incurable optimist
Usage
The expression 底なし沼 is also used figuratively to mean something one gets deeply absorbed in and cannot escape from, similar to English 'rabbit hole.' For example, a hobby that becomes all-consuming: このゲームは底なし沼だ (This game is a bottomless pit).