You searched for: “powerfuller”
powerful (adjective), more powerful, most powerful; powerfuler, powerfulest; powerfuller, ppwerfullest
1. Able to exert a lot of influence and control over people and events: The United States and Russia are two powerful nations.
2. Regarding the exertion of great physical or mental strength: Jane's dog is very big and powerful.

Jack flexed his powerful muscles to show his girlfriend how strong he was.

This entry is located in the following unit: poten-, pot-, poss-, -potent, -potence, -potency, -potential + (page 6)