Definition of uncommon in US English:

uncommon

adjective

  • 1Out of the ordinary; unusual.

    ‘prostate cancer is not uncommon in men over 60’
    ‘an uncommon name’
    • ‘Single crystals of two or more different colours are not uncommon, making unusual multicoloured faceted stones.’
    • ‘Such behaviour, unusual as it was, was not uncommon in Surrealist circles in Paris in the 1930s.’
    • ‘It is especially important in this area as it supports many rare and nationally uncommon species of plant.’
    • ‘However, it is not uncommon for relatives of either the husband or the wife to stay with them for a time.’
    • ‘Such an ensemble was uncommon for ordinary ladies in the age, but Raven was far from ordinary.’
    • ‘New York must have been getting to me, because it was not uncommon for a stranger to spark up a conversation down here.’
    • ‘And all four are very unusual and uncommon topics for discussion amongst friends.’
    • ‘Crime, rather than being abnormal and uncommon, may be considered a routine part of life.’
    • ‘It describes a circumstance which is such as to form an exception, which is out of the ordinary course, or unusual, or special, or uncommon.’
    • ‘The confusion of national and personal interest is not uncommon among dictators, however urbane.’
    • ‘Endemic to the Solomon Islands, this eagle is usually regarded as rare or uncommon.’
    • ‘Their numbers can vary considerably from year to year, but they are always considered uncommon or rare.’
    • ‘Yeast infections of the skin in older children, teens, and adults are uncommon.’
    • ‘The case presented here represents an unusual presentation of an uncommon disease.’
    • ‘They are uncommon to rare in the western Washington lowlands during migration, in March.’
    • ‘It is very uncommon for strangers to know how to use althea that you just collected.’
    • ‘My two children have uncommon names that are easy to pronounce and spell.’
    • ‘Like, Darren, I have a fairly uncommon name - however, there are a couple of others out there.’
    • ‘Now it is not uncommon to hear an adult swear in front of their children in public, and the kids to curse back.’
    • ‘Turkey Vultures are uncommon to rare in the drier portions of the Columbia Basin, even as migrants.’
    unusual, abnormal, rare, atypical, uncustomary, unconventional, unexpected, unfamiliar, strange, odd, curious, out of the ordinary, extraordinary, out of the way, outlandish, offbeat, irregular, deviant, novel, singular, peculiar, queer, bizarre, freakish, quirky, alien
    rare, scarce, few and far between, thin on the ground, exceptional, abnormal, isolated, occasional, infrequent, irregular, sporadic
    View synonyms
    1. 1.1attributive Remarkably great (used for emphasis)
      ‘an uncommon amount of noise’
      • ‘He does have an uncommon amount of common sense.’
      remarkable, extraordinary, exceptional, singular, particular, marked, outstanding, notable, noteworthy, distinctive, striking, significant, especial, special, signal, superior, unique, unparalleled, unprecedented, prodigious
      View synonyms

adverb

archaic
  • as submodifier Remarkably.

    ‘he was uncommon afraid’
    • ‘I'm uncommon afraid of fire to-night.’

Pronunciation

uncommon

/ˌənˈkämən//ˌənˈkɑmən/