bot ‧ tom ‧ less /ˈbɒtəmləs $ ˈbɑː-/ BrE AmE adjective
1 . a bottomless hole, sea etc is one that is extremely deep:
There was a rope dangling down into a dark bottomless hole.
2 . seeming to have no end or limit:
the bottomless well of information available through the Internet
The government does not have a bottomless pit (=a supply with no limits) of money to spend on public services.