The antonyms for "most goosebumpy" can be words that describe a lack of emotion, excitement, or fear. Some opposite words for goosebumps can include calm, relaxed, composed, unflappable, unruffled, or apathetic. Goosebumps can also be caused by something eerie or unsettling, so antonyms could be words like comforting, cozy, familiar, or ordinary. Alternatively, antonym phrases for "most goosebumpy" could include "most mundane," "most uneventful," or "most blase." Ultimately, the antonyms for the term "most goosebumpy" are words describing a state of being unexcited, unafraid or unaffected.