puissantadjective
/ˈpwiː.sɑ̃t //ˈpjuː.ɪ.sənt//ˈpwiː.sɑ̃t //ˈpjuː.ɪ.sənt/old usevery strong, powerful, and effective:
The king introduced some of his most significant reforms as an advertisement of his own ever more puissant authority.
More examples
- The book was dedicated to: "the most high, puissant, and redoubted prince, Henry VIII, King of England, France and Ireland, Defender of the Faith".
 - Why should there not be intelligent and puissant beings distinct from those perceptible to senses?
 - When he died, he left his kingdom to the queen, my mother, who is also a princess, the daughter of another puissant monarch of the sea.
 - Milton's notion of England as a "noble and puissant nation rousing herself like a strong man after sleep"
 
Thesaurus: synonyms and related words
Physically strong and powerful
- (as) tough as old boots idiom
 - almighty
 - billy-o
 - brute
 - burly
 - elemental
 - high-octane
 - industrial-strength
 - invincible
 - invulnerable
 - muscle-flexing
 - omnipotent
 - reckon
 - stout
 - sturdy
 - superhuman
 - to be reckoned with idiom
 - tough
 - toughie
 - unabated
 
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You can also find related words, phrases, and synonyms in the topics:
Having a powerful effect
Powerful people & dictators