Example : Do right by her.
Treat him with caution, please.
Handle the press reporters gently.

Synonyms : do by, handle

Example : Process cheese.
Process hair.
Treat the water so it can be drunk.
Treat the lawn with chemicals.
Treat an oil spill.

Synonyms : process

Example : The doctor treated my broken leg.
The nurses cared for the bomb victims.
The patient must be treated right away or she will die.
Treat the infection with antibiotics.

Synonyms : care for

Example : This book deals with incest.
The course covered all of Western Civilization.
The new book treats the history of China.

Synonyms : address, cover, deal, handle, plow

Example : Grandmother always treated us to the circus.
I like to treat myself to a day at a spa when I am depressed.

Example : Don't worry about the expensive wine--I'm treating.
She treated her houseguests with good food every night.

Synonyms : regale

Example : They had to treat with the King.

Example : I treated his advances as a joke.

Synonyms : dainty, delicacy, goody, kickshaw