General Synonyms:
* Funny
* Amusing
* Comical
* Witty
* Entertaining
* Jocular
* Droll
* Facetious
* Waggish
* Jovial
Synonyms emphasizing a specific type of humor:
* Satirical: using irony, sarcasm, or ridicule to criticize something.
* Whimsical: lighthearted, playful, and imaginative.
* Dry: subtle, understated, and often ironic.
* Sharp: clever, quick-witted, and often slightly cutting.
* Crude: vulgar, coarse, and often offensive.
The best synonym will depend on the context of the word "humorous" and the specific kind of humor you're describing.