This word is acceptable for play in the UK dictionary that is being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. having equal strength, ability or efficacy

Equal in power.

adj. having equal strength or efficacy

"If, instead of an equal and opposite reaction that thumps my right hand each time I trigger it, my .45 simultaneously fires equipotent and directly opposed bullets, I will decline to use it, or change my usual grip."

potent    strong    stiff   

equipotential system    equipotential function   

equipotency