English to English

noun (n)

• temporary loss of strength and energy resulting from hard physical or mental work(noun.state)

  Example:
  Weariness overcame her after twelve hours and she fell asleep.
  

  Synonym:
  fatigue, tiredness
  

  source: wordnet30
• The quality or state of being weary or tried; lassitude; exhaustion of strength; fatigue.(noun)

  source: webster1913