To reduce the use of something...
CUT DOWN.
To experiment, to test...
TRY ON.
To start the function of something....
TURN ON.
To stop the function of something...
TURN OFF.
To investigate, to examine...
CHECK OUT.
To discard something...
THROW AWAY.
To clean the dishes...
WASH UP.
To make something or someone clean and neat...
CLEAN UP.
