execute

Carry out or perform an action.

“the skater executed a triple pirouette”

Kill as a means of socially sanctioned punishment.

“In some states, criminals are executed”

Carry out a process or program, as on a computer or a machine.

“the computer executed the instruction”

Put in effect.

“execute the decision of the people”

Carry out the legalities of.

“execute a will or a deed”

Murder in a planned fashion.

“The Mafioso who collaborated with the police was executed”

Sign in the presence of witnesses.

“The President executed the treaty”