from The American Heritage® Dictionary of the English Language, 4th Edition
- transitive v. To make or become sad.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- v. To make sad or unhappy.
- v. To become sad or unhappy.
- v. To darken a color during dyeing
from the GNU version of the Collaborative International Dictionary of English
- transitive v. To render heavy or cohesive.
- transitive v. To make dull- or sad-colored, as cloth.
- transitive v. To make grave or serious; to make melancholy or sorrowful.
- intransitive v. To become, or be made, sad.
from The Century Dictionary and Cyclopedia
- To become heavy, compact, or firm; harden, as land or roads after a thaw or rain.
- To become sad or sorrowful.
- To make compact; make heavy or firm; harden.
- To make sad; depress; make gloomy or melancholy.
- To make dark-colored; specifically, in dyeing and calico-printing, to tone down or shade (the colors employed) by the application of certain agents, as salts of iron, copper, or bichromate of potash.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- v. make unhappy
- v. come to feel sad
sad + -en (Wiktionary)