Detach significance from, remove importance from, disassociate value from or disregard relevance to are the antonyms for "attach weight to". When one attaches weight to something, they consider it to be significant, valuable or important. To detach significance, remove importance or disassociate value from something means to consider it to be unimportant or irrelevant. It is important to note that the antonyms are not necessarily negative or opposite in meaning, but they imply a lack of importance or relevance. An example of using the antonyms in a sentence is, "I detach the significance of his political views from his personal character.