Thresh out is a phrasal verb that means to discuss in detail or to analyze thoroughly. Antonyms for this word would be to overlook, neglect, ignore, or dismiss. These words suggest the opposite of engaging in a deep and detailed conversation or examination. Instead, they imply a lack of attention or consideration. Other antonyms could include generalized terms like avoid, dodge, evade or bypass, all indicating an unwillingness to confront or work through a topic. While these verbs serve a purpose in communication, it is important to recognize the difference between simply avoiding an issue and consciously engaging in a constructive conversation.