serious
/ˈsɪə.ɹi.əs/ adjective B1- Without humor or expression of happiness; grave in manner or disposition. · deadly serious· It was a surprise to see the captain, who had always seemed so serious, laugh so heartily.
- Important; weighty; not insignificant. · This is a serious problem. We'll need our best experts.
- Really intending what is said (or planned, etc); in earnest; not jocular or deceiving. · After all these years, we're finally getting serious attention.· He says he wants to buy the team, but is he serious?
- Committed.
From the library
“Ah, it is really a serious matter, then?” asked the marquis, remarking the cloud on Villefort’s brow.
“So serious that I must take leave of you for a few days; so,” added he, turning to Renée, “judge for yourself if it be not important.”
“No; I have come to speak to you of a very serious matter.”
“A serious matter,” said the count, looking at Franz with the earnestness usual to him; “and what may it be?”
Learn serious in real texts
With a free account, hover any word in the library for its meaning, hear it read aloud, save words for review timed to your memory, and see how much of each book you already know.