portentous synonyms

portentous

modif.

  1. Ominous

    ominous, foreboding, prophetic, momentous; see important 1, ominous, sinister.

  2. Unusual

    rare, extraordinary, significant; see unusual 2. See syn. study at ominous.

Webster's New World Roget's A-Z Thesaurus Copyright © 1999 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.