Soup up and Tack on

Soup up verb - Make more powerful.

Tack on and soup up are semantically related in extend topic. In some cases you can use "Tack on" instead a verb "Soup up", when it comes to topics like adjoin.

Tack on verb - To join (something) to a mass, quantity, or number so as to bring about an overall increase.

Soup up and tack on are semantically related in extend topic. Sometimes you can use "Soup up" instead a verb "Tack on", if it concerns topics such as adjoin.