The Collaborative International Dictionary of English v.0.48:

Prosper \Pros"per\, v. i.
   1. To be successful; to succeed; to be fortunate or
      prosperous; to thrive; to make gain.
      [1913 Webster]

            They, in their earthly Canaan placed,
            Long time shall dwell and prosper.    --Milton.
      [1913 Webster]

   2. To grow; to increase. [Obs.]
      [1913 Webster]

            Black cherry trees prosper even to considerable
            timber.                               --Evelyn.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Prosper \Pros"per\, v. t. [imp. & p. p. Prospered; p. pr. &
   vb. n. Prospering.] [F. prosp['e]rer v. i., or L.
   prosperare, v. i., or L. prosperare, v. t., fr. prosper or
   prosperus. See Prosperous.]
   To favor; to render successful. "Prosper thou our handiwork."
   --Bk. of Common Prayer.
   [1913 Webster]

         All things concur toprosper our design.  --Dryden.
   [1913 Webster]

WordNet (r) 3.0 (2006):

prosper
    v 1: make steady progress; be at the high point in one's career
         or reach a high point in historical significance or
         importance; "The new student is thriving" [syn: thrive,
         prosper, fly high, flourish]

The Free On-line Dictionary of Computing (19 January 2023):

PROSPER

   ["PROSPER: A Language for Specification by Prototyping", J.
   Leszczylowski, Comp Langs 14(3):165-180 (1989)].