Definition:
Compare autumnal with other words:
autumnal vs. equinox
autumnal vs. brumal
autumnal vs. hibernal
autumnal vs. wintry
autumnal vs. winter
autumnal vs. estival
autumnal vs. summery
autumnal vs. summer
autumnal vs. spring
autumnal vs. seasonal
autumnal vs. vernal
aestival vs. autumnal
autumn vs. autumnal