English edit

Etymology edit

opalescent +‎ -ly

Adverb edit

opalescently (comparative more opalescently, superlative most opalescently)

  1. In an opalescent manner.
    • 1952, Ralph Ellison, Invisible Man, Penguin Books (2014), page 345:
      The light seemed to boil opalescently, like liquid soap shaken gently in a bottle.