  We study non-Gaussianity induced by a pseudo Nambu-Goldstone boson with a
cosine-type scalar potential. We focus on how the non-Gaussianity is affected
when the pseudo Nambu-Goldstone boson rolls down from near the top of the
scalar potential where the deviation from a quadratic potential is large. We
find that the resultant non-Gaussianity is similar to that obtained in the
quadratic potential, if the pseudo Nambu-Goldstone boson accounts for the
curvature perturbation; the non-Gaussianity is enhanced, otherwise.
