Pageantry rhymes with:
carpentry, coventry, gallantry, infantry, peasantry, pedantry, pleasantry, carpentry, complementary, country, coventry, elementary, entry, gallantry, gantry, gentry, infantry, intrie, lantry, pantry, peasantry, pedantry, pleasantry, reentry, santry, sentry, wintry
Pageantry sounds like:
pachysandra, peasantry, pignataro