From Middle English seryows, from Old French serieux, from Medieval Latin sēriōsus, an extension of Latin sērius (“grave, earnest, serious”), from Proto-Indo-European *swēr- (“heavy”). Cognate with German schwer (“heavy, difficult, severe”), Old English swǣr (“heavy, grave, grievous”). More at swear, sweer.
serious (comparative seriouser or more serious, superlative seriousest or most serious)
- Without humor or expression of happiness; grave in manner or disposition; earnest; thoughtful; solemn.
- It was a surprise to see the captain, who had always seemed so serious, laugh so heartily.
- Important; weighty; not trifling; leaving no room for play; needing great attention; critical.
- This is a serious problem. We'll need our best experts.
- Really intending what is said; being in earnest; not jesting or deceiving; meaningful.
- After all these years, we're finally getting serious attention.
without humor or expression of happiness
important; weighty; not trifling; leaving no room for play
- Arabic: جدي (jáddiy), جاد (jaadd)
- Armenian: լուրջ (lurǰ)
- Bashkir: етди (yetdi)
- Belarusian: сур'ёзны (sur’józny)
- Catalan: seriós
- Mandarin: 認真 (zh), 认真 (zh) (rènzhēn), 嚴重, 严重 (zh) (yánzhòng), 沉重 (zh) (chénzhòng)
- Czech: vážný
- Danish: alvorlig (da)
- Dutch: serieus (nl)
- Esperanto: serioza, grava (eo)
- Faroese: álvarsamur
- Finnish: vakava (fi)
- French: sérieux (fr)
- Georgian: მნიშვნელოვანი (mnišvnelovani), საყურადღებო (saquradḡebo), ღრმააზროვანი (ḡrmaazrovani), სერიოზული (seriozuli)
- German: ernst (de), ernsthaft (de), schwerwiegend (de)
- Greek: σοβαρός (el) (sovarós)
- Hungarian: komoly (hu), súlyos (hu)
- Icelandic: alvarlegur (is)
- Italian: serio (it), grave (it)
really intending what is said; being in earnest