serious

深刻な、重大な

重要だったり害を及ぼすおそれがあったりして、十分な注意が必要な。

やさしい英語で： Important enough to need careful attention, often because it could cause harm.

• This is a serious problem.
• Nobody suffered serious injuries in the crash.
• Ignoring that warning could have serious consequences.

類義語： major, grave, important

反対語： minor, trivial

よく使う表現： serious problem, serious injury, serious damage, serious consequences

本気の、真剣な

冗談ではなく、言ったことを本当に思い、行うつもりでいる。

やさしい英語で： Meaning what you say or truly intending to do something, rather than joking.

• Are you serious?
• He was serious when he offered to help.
• I'm serious about learning to swim this year.

使い方： serious about something/doing something (She is serious about moving abroad.)

類義語： sincere, in earnest

反対語： joking, insincere

よく使う表現： are you serious, serious about something, completely serious, serious offer

真面目な、厳粛な

表情や態度に笑いや楽しさをあまり見せない。

やさしい英語で： Showing little happiness or humour in your face or behaviour.

• She looked very serious.
• His serious expression made everyone fall silent.
• He was a quiet, serious child who rarely smiled.

類義語： solemn, grave, unsmiling

反対語： cheerful, lighthearted

よく使う表現： serious expression, serious face, look serious, serious manner