possessiveness; desire to monopolize; desire for control
A strong desire to have someone or something all to oneself, often with a negative connotation of jealousy or unwillingness to share.
His possessiveness is so strong that he won't even let me hang out with friends.
Out of a desire for control, she secretly checked his phone.
He has a very possessive personality.
She tried to suppress her possessiveness toward him.