Serious

1.

(Solemn and thoughtful, not smiling, sinecure, important, thoughtful; grave solemn, not frivolous or trifling; in earnest, demanding thought and attention) ដែលរម្យទម, ដែលនឹងធឹង, មិនលេងធេង, ដែលធ្ងន់
Example: A serious worker; a serious attempt, I'm quite serious (about it); I mean what I say, Serious reading not mere novels, Look serious a serious look.serious illness ដែលធ្ងន់ serious expression ដែលមាំ, serious disposition ដែលមិនលេងសើច, serious attempt ដែលប្រាកដប្រជា, serious reading ដែលប្រកបដោយសារៈសំខាន់
Example: Her face was serious as she told us the bad news.

2.

(បច្ចេកទេស) ធ្ងន់ធ្ងរ, សំខាន់, អស់ពីចិត្ត, មែនទែន, ខ្លាំង

• pretty serious
  - ធ្ងន់ណាស់
• serious malarial attack
  - គ្រុនសន្ធំ, គ្រុនចាញ់សាហាវ
• serious offence
  - បទលើ្មសធ្ងន់ធ្ងរ

1.

Grave in manner or disposition; earnest; thoughtful; solemn; not light, gay, or volatile.

2.

Really intending what is said; being in earnest; not jesting or deceiving.

3.

Important; weighty; not trifling; grave.

4.

Hence, giving rise to apprehension; attended with danger; as, a serious injury.

1.

alarming, critical, dangerous, earnest, grave, great, important, momentous, risky, sedate, sober, solemn, staid, weighty

1.

relaxed, small, trifling, trivial