to water it down (in Creole)

To water down (as in: to dilute) → koupe, or delye

Reduce it with some water before you give it to her.
Koupe l ak yon ti dlo anvan ou ba li l.

The coffee was so strong I had to dilute it with some water.
Kafe a te si tèlman fò mwen te oblije delye l ak yon ti dlo.