Crossword Clue:

Have mastery over

Answer	Crossword Clue
OWN	Have mastery over
TAMING	Gaining mastery over
HOST	Have over

HOST	Have over, say
DOMINATE	Have control over
PRESIDE	Have jurisdiction (over)
RULE	Have power over
ENTERTAIN	Have guests over
AROOF	Have -- over one's head
AROOF	Have .. over one's head
OWN	Have power over, slangily

AROOF	Have ... over one's head.
OWE	Have to fork over
OUTGUN	Have superior firepower over
EONS	Mountains have developed over them
EONS	Mountains have grown over them
LAND	Many wars have been fought over it
EXES	Ones who may have issues over issues
ZIPPOS	Over 400 million of them have been made since 1932

RETOSS	Mix over, as a salad whose walnuts have sunk to the bottom