"jovial" doesn't have a comparative and superlative form. Instead, you would say "more jovial" or "most jovial."
He is so Jovial! Always be jovial in life.
Jovial
Here are some sentences.He's a jovial fellow.Her jovial personality makes her lovable.
Jovial - watch - was created in 1929.
She is very nice looking. She is also very jovial .
The boy was very jovial when he received a new toy.
Despite the rainy weather, the family remained jovial and enjoyed their picnic in the park.
Brice Jovial was born on 1984-01-25.
The Three Jovial Huntsmen was created in 1880.
He made me laugh so much with his jovial spirit.
Jovial can be derived from Jove, or Jupiter, who is the Roman equivalent to Zeus.