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July 30, 2026Short & citedBlog
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Everyday Life • Emotion

Smile

A smile is a facial expression usually formed by turning up the corners of the mouth, often with involvement of the eyes.

Updated July 30, 20261 min readCited sources

A smile is a facial expression formed by turning up the corners of the mouth, often involving the eyes. It commonly signals happiness, amusement, or friendliness, but can also indicate embarrassment, irony, or anxiety depending on context.

What it is

A smile is primarily created by flexing the muscles at the sides of the mouth. When the muscles around the eyes also contract, it is called a Duchenne smile, often considered a more genuine joyful expression.

Why it matters

Smiling is a key social cue used across cultures, but its meaning varies. In some contexts, it can express confusion, politeness, or contempt, not just happiness. Understanding these nuances helps avoid miscommunication.

Key details

In Canadian English, 'smile' is used as both a noun and a verb. It is a familiar part of everyday interaction, though its interpretation depends on cultural and situational factors.

In short

  • A smile is a facial expression involving mouth and sometimes eye muscles.
  • It can signal happiness, amusement, or friendliness, but also embarrassment or irony.
  • Cultural context shapes how smiles are interpreted.
  • The Duchenne smile involves the eyes and is often seen as more genuine.
Canadian angle

Smiling is a familiar social cue in Canadian English and everyday Canadian interaction, and the word is used in standard Canadian usage as both a noun and a verb.

Quick questions

What is a Duchenne smile?
A Duchenne smile involves the muscles around the eyes and is often described as a more genuine joyful smile.
Does a smile always mean happiness?
No. Smiles can also express embarrassment, irony, contempt, anxiety, or polite social communication.
Is smiling the same in all cultures?
No. Smiling is widely used but its meaning and social function vary between different societies and contexts.

Sources

  1. Wikipedia — https://en.wikipedia.org/wiki/Smile
    Supports: Basic definition, Duchenne smile, and cultural variation in meaning.
  2. Merriam-Webster — https://www.merriam-webster.com/dictionary/smile
    Supports: Dictionary definition and noun/verb usage.
  3. Cambridge Dictionary — https://dictionary.cambridge.org/us/dictionary/english/smile
    Supports: Definition as a happy or friendly facial expression and verb use.
  4. Britannica Dictionary — https://www.britannica.com/dictionary/smile
    Supports: Definition and common figurative/social uses.
  5. PubMed Central — https://pmc.ncbi.nlm.nih.gov/articles/PMC4439690/
    Supports: Overview of smile meanings and facial-expression description.