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understand (EN)
verb

verb “understand”

infinitive understand; he understands; past tense understood; past part. understood; ger. understanding
  1. to fully comprehend the meaning or intention behind words, statements, art, or people's actions
    After the teacher explained the theorem, I finally understood the math problem.
  2. to think or believe that one has enough knowledge about something, even if it might not be complete
    I understand you're not coming to work tomorrow, right?