Your face is the front part of your head from your chin to the top of your forehead, where your mouth, eyes, nose, and other features are.

If your face is happy, sad, or serious, for example, the expression on your face shows that you are happy, sad, or serious.

The face of a cliff, mountain, or building is a vertical surface or side of it.

The face of a clock or watch is the surface with the numbers or hands on it, which shows the time.

If you say that the face of an area, institution, or field of activity is changing, you mean its appearance or nature is changing.

If you refer to something as the particular face of an activity, belief, or system, you mean that it is one particular aspect of it, in contrast to other aspects.

If you lose face, you do something which makes you appear weak and makes people respect or admire you less. If you do something in order to save face, you do it in order to avoid appearing weak and losing people's respect or admiration.

If something that you have planned blows up in your face, it goes wrong unexpectedly, with the result that you suffer.

If you say that someone can do something until they are blue in the face, you are emphasizing that however much they do it, it will not make any difference.

If someone or something is face down, their face or front points downwards. If they are face up, their face or front points upwards.

You can use the expression 'on the face of the earth' to mean 'in the whole world', when you are emphasizing a statement that you are making or making a very exaggerated statement.

If you say that something will be wiped off the face of the earth or disappear from the face of the earth, you mean that it will stop existing.

If you come face to face with someone, you meet them and can talk to them or look at them directly.

If you come face to face with a difficulty or reality, you cannot avoid it and have to deal with it.

If an action or belief flies in the face of accepted ideas or rules, it seems to completely oppose or contradict them.

If you take a particular action or attitude in the face of a problem or difficulty, you respond to that problem or difficulty in that way.

If someone laughs in your face, they are openly disrespectful towards you.

If you have a long face, you look very unhappy or serious.

If you make a face, you show a feeling such as dislike or disgust by putting an exaggerated expression on your face, for example by sticking out your tongue. In British English, you can also say pull a face .

You say on the face of it when you are describing how something seems when it is first considered, in order to suggest that people's opinion may change when they know or think more about the subject.

If you put a brave face on a bad situation or put on a brave face, you try not to show how disappointed or upset you are about the situation. In American English you can also say put on a good face.

You can say that someone has set their face against something to indicate that they are opposed to it, especially when you want to suggest that they are wrong.

If you show your face somewhere, you go there and see people, although you are not welcome, are rather unwilling to go, or have not been there for some time.

If you manage to keep a straight face, you manage to look serious, although you want to laugh.

If you say something to someone's face you say it openly in their presence.

If a feeling is written all over your face or is written across your face, it is very obvious to other people from your expression.