• (British) IPA: /ˈpwɪs(ə)nt/, /ˈpjuːɪs(ə)nt/
• (America) IPA: /ˈpjuəsənt/, /ˈpwɪsənt/

puissant

1. (archaic or literary) Powerful, mighty, having authority.
   • 1599 — William Shakespeare, Hen V ↗ i 2

     Awake remembrance of these valiant dead, / And with your puissant arm renew their feats.

   • 1667 — John Milton, Paradise Lost Book I

     For who can yet believe, though after loss,
     That all these puissant legions, whose exile
     Hath emptied Heaven, shall fail to re-ascend,
     Self-raised, and repossess their native seat?

   • 1726 October 27, [Jonathan Swift], chapter V, in Travels into Several Remote Nations of the World. In Four Parts. […] [Gulliver’s Travels], volume I, London: Printed for Benj[amin] Motte, […], OCLC 995220039 ↗, part I (A Voyage to Lilliput):

     I cried in a loud voice, "Long live the most puissant king of Lilliput!"

   • 1851, Herman Melville, Moby Dick, chapter 24

     How comes all this, if there be not something puissant in whaling?

   • 1961 - Robert A. Heinlein, Stranger in a Strange Land

     In fact the titles could be anything-or (with some of the most puissant) no title at all...

• puissance

• French: puissant
• Russian: могу́щественный