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serious

serious

629 3.2
Needing a lot of effort or careful thought
  • adjective
  • /ˈsɪr.i.əs/
translation icon : serio
  • Emily was a more determined and serious student than Sarah had been at 14.
  • a serious problem
  • a serious effort
  • a serious study

So you have to be serious about your health.

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Examples

  • I think it's a test about how serious you are about music.

  • So you have to be serious about your health.

  • I think Molly and I should go upstairs and do some serious talking.

  • Used with appropriate caution, modest methods can support serious inquiry into the work of teaching.

    Academic text (1990)
  • Look, O'Neil, I get it, you want to be a serious journalist.

  • This project requires serious commitment and extensive planning.

  • Students should take their studies seriously to achieve good grades.

  • The scientist conducted a serious analysis of the environmental data.

Synonyms

heavy
vsserious
221 2.1

Hard to do or understand

focuses on intellectual challenge and core substance rather than mere intensity
intensive
vsserious
156 4.3

Needing a lot of work, care, or money at the same time

covers steady intellectual demand or substance rather than short intense bursts
thoughtful
vsserious
68 2.6

Serious and quietly thinking about something

denotes intellectual effort and substantial importance rather than personal reflection
strenuous
vsserious
34 4.9

Needing a lot of effort or energy

focuses on intellectual challenge and importance rather than physical energy
arduous
vsserious
29 7.7

Very difficult to do and needing a lot of effort over a long time

relates to thoughtfully demanding or substantial matters, not long physical struggle
substantial
vsserious
7 5.0

About the main, basic part of something

highlights effort and intellectual demand rather than importance or core focus
demanding
vsserious
4.1

Needing a lot of time, effort, or attention

is about intellectual difficulty and substantial importance more than effort

Antonyms

1.0

Not hard to do, understand, or achieve

1.0

Easy to understand or do

94 5.6

Not thorough and only about what is obvious, not deep

Compounds

41 3.0

A problem that needs careful attention and action

A health problem that is very bad and may last a long time

A strong chance that people or property will be harmed

Breaking an important rule or law that causes big harm and heavy punishment

Music that people listen to carefully, like symphonies and operas

A calm, quiet way of behaving that shows you are thinking about important things

Being careful and thoughtful about important things

How Demanding

arduous
29 7.7
demanding
4.1
serious
629 3.2
moderate
415 3.3
simple
1.0

Surface Forms

serious positive
seriouser comparative
seriousest superlative

Etymology

Serious comes from the Latin word serius, which meant 'weighty' or 'important' — imagine a problem that feels heavy. So a serious task is one that needs a lot of thought and effort.