Definition of smile verb from the Oxford Advanced Learner's Dictionary

      

    smile

     verb
    verb
    BrE BrE//smaɪl//
     
    ; NAmE NAmE//smaɪl//
     
    Verb Forms present simple I / you / we / they smile
    BrE BrE//smaɪl//
     
    ; NAmE NAmE//smaɪl//
     
    he / she / it smiles
    BrE BrE//smaɪlz//
     
    ; NAmE NAmE//smaɪlz//
     
    past simple smiled
    BrE BrE//smaɪld//
     
    ; NAmE NAmE//smaɪld//
     
    past participle smiled
    BrE BrE//smaɪld//
     
    ; NAmE NAmE//smaɪld//
     
    -ing form smiling
    BrE BrE//ˈsmaɪlɪŋ//
     
    ; NAmE NAmE//ˈsmaɪlɪŋ//
     
    Facial expressions
     
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  1. 1  [intransitive] to make a smile appear on your face to smile sweetly/faintly/broadly, etc. He smiled with relief. He never seems to smile. He smiled to think how naive he used to be. smile at somebody/something She smiled at him and he smiled back. I had to smile at (= was amused by) his optimism. Her eyes smiled up at him. See related entries: Facial expressions
  2. 2[transitive] to say or express something with a smile smile something She smiled her thanks. + speech ‘Perfect,’ he smiled.
  3. 3[transitive, no passive] smile something to give a smile of a particular type to smile a small smile She smiled a smile of dry amusement.
  4. Word Origin Middle English: perhaps of Scandinavian origin; related to smirk.Extra examples Gary is always smiling—he’s so positive. He looked at the mess and smiled weakly. He smiled at her, and she smiled back. He turned and smiled at me. I simply smiled at him and said ‘hi!’ Lawrence nodded, smiling happily. Molly smiled rather wryly and said nothing. She put down her tools and smiled broadly. She smiled to herself, picturing how surprised her mother would be to see her. She smiled up at him. She smiled with pleasure. The doctor smiled reassuringly. The memory still made her smile. I had to smile at his optimism.Idioms
    smile/grin/beam from ear to ear
     
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    to be smiling, etc. a lot because you are very pleased about something See related entries: Happiness
    Phrasal Verbssmile on somebody
See the Oxford Advanced American Dictionary entry: smile