Definition of uncommon adjective from the Oxford Advanced Learner's Dictionary

     

    uncommon

     adjective
    adjective
    BrE BrE//ʌnˈkɒmən//
     
    ; NAmE NAmE//ʌnˈkɑːmən//
     
     
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  1. 1not existing in large numbers or in many places synonym unusual, rare an uncommon occurrence Side effects from the drug are uncommon. It is not uncommon for college students to live at home. Red squirrels are uncommon in England. opposite common
  2. 2(formal or literary) unusually large in degree or amount; great synonym remarkable She showed uncommon pleasure at his arrival.
  3. Extra examples Such technologies were still uncommon in the US. It is not uncommon to find 30 different species on one tree. It’s a delayed reaction, which is not uncommon. Oswald is an uncommon name nowadays. Side effects from the injection are uncommon. Unfortunately, racist attacks are not at all uncommon.
See the Oxford Advanced American Dictionary entry: uncommon