verbs
be in charge of, act on, or dispose of
"I can deal with this crew of workers"; "This blender can't handle nuts"; "She managed her parents' affairs after they got too old"
interact in a certain way
"Do right by her"; "Treat him with caution, please"; "Handle the press reporters gently"
act on verbally or in some form of artistic expression
"This book deals with incest"; "The course covered all of Western Civilization"; "The new book treats the history of China"
touch, lift, or hold with the hands
"Don't handle the merchandise"
handle effectively
"The burglar wielded an axe"; "The young violinist didn't manage her bow very well"
show and train
"The prize-winning poodle was handled by Mrs. Priscilla Prescott"
is a type of (narrower)
control (others or oneself) or influence skillfully, usually to one's advantage
"She manipulates her boss"; "She is a very controlling mother and doesn't let her children grow up"; "The teacher knew how to keep the class in line"; "she keeps in line"