FluencyCraft

serious

"Serious" is a very common English adjective with about four main senses. It describes everything from a person's solemn expression to the severity of a problem. You will encounter it constantly in everyday conversation, news, and writing.

1adjectivenot joking / solemn

When someone is serious, they are not laughing or playing around — they mean exactly what they say. Think of a teacher who stops smiling and looks you directly in the eyes. That expression is serious.

everyday language · Modern, widely used

She had a serious look on her face when she told us the news.

Are you serious? I can't believe you actually did that!

He was completely serious when he said he wanted to quit his job.

2adjectivesevere / dangerous

When a problem, illness, or situation is serious, it is important and potentially harmful — not something you can ignore. If a doctor says your injury is serious, it means you need real attention and care.

everyday language · Modern, widely used

The accident caused serious damage to both cars.

He was taken to hospital with a serious heart condition.

Climate change is a serious threat to the planet.

3adjectivesincere / genuinely committed

When you are serious about something, you truly care about it and put real effort into it. It is not just a hobby or a passing idea — it matters to you deeply.

everyday language · Modern, widely used

If you are serious about learning English, you need to practise every day.

They are serious about starting their own business.

She is a serious athlete who trains six days a week.

4adjectivethoughtful / not light-hearted

A serious book, film, or conversation deals with important or deep topics — it is not meant to entertain or make you laugh. Think of the difference between a comedy film and a documentary about war.

everyday language, arts, media · Modern, widely used

The documentary was a serious exploration of poverty in the city.

They had a serious conversation about their future together.

He prefers serious literature to popular fiction.

Content generated by AI — may contain inaccuracies