Took note is a phrase commonly used to refer to the act of paying attention or acknowledging something. Some antonyms for this phrase may include ignored, overlooked, neglected, or disregarded. These words imply a lack of action or recognition towards the subject at hand. Another antonym could be forgot, indicating that the subject was not even remembered or considered in the first place. On the other hand, listened attentively, absorbed, or heeded may serve as synonyms instead, as they indicate an active and engaged response towards the subject. Ultimately, the choice of antonyms can convey a different tone and intention in communication.