overdilute
/ˌoʊvərdɪˈluːt/Definitions
1. verb
to make (a liquid, mixture, or substance) too watery or weak; to dilute excessively
“The chef feared that the soup would overdilute if too much water was added.”
2. noun
the act of making (a liquid, mixture, or substance) too watery or weak
“The overdilution of the paint caused it to lose its desired color and texture.”