The difference between Ridiculous and Serious

When used as adjectives, ridiculous means deserving of ridicule, whereas serious means without humor or expression of happiness.

check bellow for the other definitions of Ridiculous and Serious

Ridiculous as an adjective:

Deserving of ridicule; foolish; absurd.

Examples:

"That hairstyle looks ridiculous."

"It's ridiculous to charge so much for a little souvenir."

"You make ridiculous statements a lot, like saying that UFOs are real."

Serious as an adjective:

Without humor or expression of happiness; grave in manner or disposition

Examples:

"It was a surprise to see the captain, who had always seemed so serious, laugh so heartily."

"synonyms: earnest solemn"
Serious as an adjective:

Important; weighty; not insignificant

Examples:

"This is a serious problem. We'll need our best experts."
Serious as an adjective:

Really intending what is said; in earnest; not jocular or deceiving

Examples:

"After all these years, we're finally getting serious attention."