ボトムレス

noun

bottomless

Used for things that seem to have no bottom, such as a bottomless pit, or figuratively for endless appetite or capacity.

• 彼かれの食しょく欲よくはまるでボトムレスだ。

  His appetite is practically bottomless.

• この湖みずうみはボトムレスだと言いわれている。

  This lake is said to be bottomless.