Riv
a small stream of water
Rivulet
saying something more than once
Redundant
having a little moisture; very dry
Arid
intensely hot or burning
torrid
a flood
Deluge
borrowing from something else; unoriginal
Derivative
in great number; plentiful
Abundant
having a disastrous effect
Cataclysmic
a heavy stream; a gush
Torrent
to water down; to weaken
Dilute
having no equal or competition
Unrivaled
extremely old; ancient
Antediluvian