a suffix occurring in adjectives borrowed from Latin, with the meaning “inclined to do, habitually engaging in” the action specified by the initial element: bibulous; credulous; garrulous; tremulous.

Nearby words

  1. -tuple,
  2. -ty,
  3. -type,
  4. -ule,
  5. -ulent,
  6. -ure,
  7. -uret,
  8. -uretic,
  9. -urgy,
  10. -uria

Origin of -ulous

< Latin -ulus, -ula, -ulum; see -ule, -ous

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019