1) In a humorous manner 2) With humor 3) With humour 4) With wit 
• (adv.) Facetiously; wittily. • (adv.) Capriciously; whimsically.
Hu'mor·ous·ly adverb 1. Capriciously; whimsically. « We resolve rashly, sillily, or humorously .» Calamy. 2. Facetiously; wittily. 
[adv] - in a humorous manner
humorously Indicating, characterized by, or expressive of a sense of humor or amusement. Related 'jest; joke; wit; humor; funny' word units: faceti-; farc-; jocu-; lud-; satir-.
adverb in a humorous manner; `Dickens had humorously suggested a special service of intercession at St. Paul`s Cathedral`