bot·tom·less 
(bŏtəm-lĭs)
(bŏtəm-lĭs)adj.
1. Having no bottom.
2. Too deep to be measured: a bottomless glacial lake.
3. Difficult or impossible to understand; unfathomable: one of the bottomless mysteries of life.
4. Having no limitations or bounds; limitless: a bottomless supply of money.
5.
a. Nude, especially unclothed below the waist: bottomless dancers.
b. Featuring such dancers as entertainment: bottomless bars.
bottom·less·ly adv.