from Wiktionary, Creative Commons Attribution/Share-Alike License
- v. To make melancholy.
- v. To be melancholy; to be consumed by sad thoughts.
from the GNU version of the Collaborative International Dictionary of English
- intransitive v. To become gloomy or dejected in mind.
- transitive v. To make melancholy.
from The Century Dictionary and Cyclopedia
- To be or become melancholy; indulge in gloomy musings.
- To make melancholy.
From melancholy + -ize, probably after French méancoliser. (Wiktionary)