7-Letter Words Containing: __ACK

• subject an aircraft to air piracy

• seizure of a vehicle in transit either to rob it or divert it to an alternate destination

• take arbitrarily or by force

• seize control of

• an untrained person who pretends to be a physician and who dispenses medical advice

• the harsh sound of a duck

• medically unqualified

• utter quacking noises

• act as a medical quack or a charlatan

• take someone's car from him by force, usually with the intention of stealing it

• financial return or reward (especially returns equal to the initial investment)

• the act of taking revenge (harming someone in retaliation for something harmful that they have done) especially in the next life

• (British informal) exhausted or worn out

• the act of purchasing back something previously sold

• something especially big or impressive of its kind

• a narrow ridge of hills