Here's what rhymes with enlightenment.

Consider these alternatives

rationalism / given humanism / given romanticism / position liberalism / given teachings / meetings idealism / realism mysticism / given reformation / information contemplation / operation attaining / training modernism / given socialism / given rationality / personality metaphysical / physical classicism / given rationalist / nationalist renaissance / response attained / obtained meditation / education attain / main civilization / relation realization / relation immortality / personality writings / tidings