Meaning of the word "written all over someone's face" in English

What does "written all over someone's face" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

written all over someone's face

US /ˈrɪt.ən ɔl ˈoʊ.vər ˈsʌm.wʌnz feɪs/
UK /ˈrɪt.ən ɔl ˈoʊ.vər ˈsʌm.wʌnz feɪs/
"written all over someone's face" picture

Idiom

1.

if an emotion or thought is written all over someone's face, it is very obvious to other people

Example:
Her disappointment was written all over her face when she didn't get the job.
You don't have to tell me, it's written all over your face that you're in love.
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