The phrase "fluff off" typically means to dismiss or disregard something or someone. Its antonyms can be interpreted in a few different ways, depending on the context. In terms of the meaning of the phrase, some antonyms could be to accept, acknowledge, or consider something or someone. Alternatively, if we consider the tone of the phrase, antonyms could include to pay attention, take seriously, or show respect. It's important to note that the words we choose to use have a significant impact on the way we communicate and the messages we convey. While it's okay to dismiss something outright in some situations, in others, taking a more thoughtful approach may be more appropriate.