Synonyms for Humorous:

adj.

all (adjective)
humourous.
amusing (adjective)
comical, screaming.
cheerful (adjective)
jocose.
funny, comical (adjective)
jocose, jocular, ludicrous, priceless, farcical, droll, waggish, entertaining, witty, facetious, laughable, screaming, playful, hilarious, amusing, comic.
tongue-in-cheek (adjective)
tongue-in-cheek.
witty (adjective)
witty.
zany (adjective)
zany.

n.

priceless, playful. comedic, laughter. comical (noun)
study at witty, entertaining.
humorous (noun)
ironic, bantering, ludicrous, joking, uproarious, ironical, jocular, buffoonish, farcical, jocose, droll, ridiculous, witty, humourous, amusing, laughable, wry, clowlike, tongue-in-cheek, mirthful, dry, tragicomic, jesting, gilbertian, funny, waggish, clownish, seriocomical, hilarious, slapstick, risible, sidesplitting, comical, comic, screaming, facetious, zany, tragicomical, seriocomic.

Other synonyms:

comedic, priceless. playful. diverting
entertaining.
joking
joking.
laughable
laughable.
Other relevant words:
laughter, entertaining, comedic, priceless, playful, amusing.

Usage examples for humorous

  1. He eyed the two young men curiously, and a humorous smile spread over his face. – The Second String by Nat Gould
  2. Billy was going, in humorous deprecation, when there was a running step along the veranda, and Peter came in with a bound. – Rose MacLeod by Alice Brown
  3. " That may explain the thing," Carroll agreed with an air of humorous reflection. – Vane of the Timberlands by Harold Bindloss