Here's what rhymes with bewilderment.

Consider these alternatives

exasperation / operation dismay / may disbelief / believe consternation / information bafflement / agreement indignation / information elation / relation sorrow / tomorrow impatience / relations disdain / main irritation / operation unease / these frustration / operation despair / their displeasure / never trepidation / education distaste / based grief / leave derision / given bemused / used exhilaration / education