This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. Characterized by or causing great merriment.

adj. Very funny; causing great merriment and laughter.

adj. Mirthful; noisy; merry.

Gleefully gay or merry; manifesting high spirits; exhilarated; jolly.

adj. marked by or causing boisterous merriment or convulsive laughter

"Consider This: Although Hilario looks like the word hilarious, many people may not know the traditional Spanish pronunciation is “ee-LAR-ee-oh” with a silent h."

humourous    humorous   

exhilaration    exhilarate    Hilary   

hilariously    hilariousness    hilarity   

mirthful    noisy    merry    funny   

Aquarius    Marius    Stradivarius    gregarious    nefarious    precarious    various    vicarious   

amuse    boisterous    joyous    ironic    jovial    disturb    humorous    uproarious    bizarre    ludicrous