Antonyms for the phrase "take measure of" could include terms like underestimate or misjudge. These ideas express a lack of accuracy or precision in evaluating something, whether it be a situation, an individual, or a decision. Other antonyms might include ignoring, overlooking, or neglecting, suggesting a failure to recognize the importance or relevance of a particular factor or aspect. Overall, these antonyms imply a failure to fully comprehend or assess something, and may result in negative consequences or missed opportunities. In contrast, taking measure of something requires careful observation, analysis, and understanding in order to make informed decisions and take appropriate action.