US: /ˈsɪɹiəs/
UK: /sˈi‍əɹɪəs/

English Vietnamese dictionary

serious /'siəriəs/
  • tính từ
    • đứng đắn, nghiêm trang, nghiêm nghị
      • a serious young person: một thanh niên đứng đắn
      • to have a serious look: có vẻ nghiêm trang, trông nghiêm nghị
    • hệ trọng, quan trọng, không thể coi thường được; nghiêm trọng, trầm trọng, nặng
      • this is a serious matter: đây là một vấn đề quan trọng
      • serious illness: bệnh nặng, bệnh trầm trọng
      • serious defeat: sự thất bại nặng
      • serious casualties: tổn thương nặng
    • đáng sợ, đáng gờm
      • a serious rival: một đối thủ đáng gờm
    • thành thật, thật sự, không đùa
      • are you serious?: anh có nói thật không?
      • a serious attempt: một cố gắng thật sự
    • (thuộc) tôn giáo, (thuộc) đạo lý

Advanced English dictionary

+ adjective
1 bad or dangerous: a serious illness / problem / offence + to cause serious injury / damage + They pose a serious threat to security. + The consequences could be serious.
needing thought
2 needing to be thought about carefully; not only for pleasure: a serious article + a serious newspaper + It's time to give serious consideration to this matter.
3 that must be treated as important: We need to get down to the serious business of working out costs. + The team is a serious contender for the title this year.
not silly
4 thinking about things in a careful and sensible way; not silly: Be serious for a moment; this is important. + I'm afraid I'm not a very serious person.
not joking
5 ~ (about sb/sth)
~ (about doing sth) sincere about sth; not joking or meant as a joke: Believe me, I'm deadly (= extremely) serious. + Don't laugh, it's a serious suggestion. + Is she serious about wanting to sell the house? + He's really serious about Penny and wants to get engaged. + She doesn't have a serious boyfriend. + (spoken) You can't be serious! (= you must be joking) + You think I did it? Be serious! (= what you suggest is ridiculous)
large amount
6 (informal) used to emphasize that there is a large amount of sth: You can earn serious money doing that. + I'm ready to do some serious eating (= I am very hungry).

Thesaurus dictionary

1 grave, solemn, earnest, unsmiling, poker-faced, straight-faced, sedate, sober, pensive, thoughtful; humourless, sombre, grim, dour, severe:
One should be wary of the person who is always serious, who cannot see the ludicrous side of life
2 grave, important, vital, dangerous, weighty, significant, momentous, crucial, consequential, life-and-death or life-or-death, urgent, pressing; no laughing matter, of consequence or moment or importance:
Things like the greenhouse effect and the hole in the ozone layer are serious concerns for all mankind
3 sincere, straightforward, not joking or fooling, genuine, honest:
Is he serious about wanting me to fetch him a left-handed wrench?
4 acute, critical, life-threatening, bad, dangerous, nasty, perilous, alarming, grave, severe, precarious:
His condition is serious and we might have to operate tonight. She had no idea that measles could be such a serious illness.

Collocation dictionary

1 bad/dangerous


be, look, seem, sound | become, get
By this time the riots were getting serious.
| remain


extremely, particularly, really, very | fairly, quite | potentially

2 not joking


be, look, sound
Come on, be serious!
| become, turn
He became serious all of a sudden.


deadly, quite, very


Are you serious about resigning?

Concise English dictionary

'sɪrɪəs /'sɪər-
+concerned with work or important matters rather than play or trivialities
+of great consequence
+causing fear or anxiety by threatening great harm
+appealing to the mind
+completely lacking in playfulness
+requiring effort or concentration; complex and not easy to answer or solve