English

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Etymology

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From under- +‎ average.

Pronunciation

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Adjective

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underaverage (comparative more underaverage, superlative most underaverage)

  1. Below average.
    • 1902, Bernard Dyer, Results of Investigations on the Rothamsted Soils, page 75:
      In 1893 there was an underaverage crop and an underaverage rainfall, and therefore less than average utilization of nitrates and probably later and less complete nitrification []