DuckCorp Dico

Found one definition

1.                 From en.wiktionary.org:
                   
   
   
                   
                     
   
   ** English
   
   *** Etymology
   From [en].
   
   *** Adjective
   [en-adj]
   
    1. Suddenly surging or spiking upward.
    2. * {{ quote-text | en | year=2020 | author=Amélie Louise Rives | title=Shadows of Flames
   |passage=[...] and his brilliancy of the unstable, SKYROCKETY sort that peters
   out in talk and scribbling.}}
   
    1. * {{ quote-text | en | year=2022 | author=Rex Beach | title=The Ne'er-Do-Well
   |passage=Do you realize the SKYROCKETY nature of your progress, young man?
   Lord! You take my breath.}}