powerless
SMART Vocabulary: related words and phrases Physically strong and powerful
(as) tough as old bootsidiom
beefy
billy-o
brute
brute forcephrase
bulletproof
indestructible
indestructibly
industrial-strength
intensely
invincible
ruggedly
shatterproof
shockproof
sinewy
souped-up
stalwart
violent
washboard stomach
with a vengeanceidiom
Related word
potently
potent | American Dictionary
potent
adjective
us/ˈpoʊ·tənt/
powerful, persuasive, or effective:
This is the most potent headache remedy you can get without a prescription.
Her voice has been a potent force on concert stages for more than 30 years.
potency
noun[ U ]us/ˈpoʊ·tən·si/
Scientists are testing the potency of the new drug.