of or characteristic of or occurring in autumn;
"the autumnal equinox"
characteristic of late maturity verging on decline;
"a serene autumnal mood"
- The day was warm, autumnal, and rainy.
- I feel a little cool in the autumnal night.
- The weather in June was positively autumnal.
Thick as Autumnal Leaves that strew the Brooks In Vallombrosa.出自： Milton
The autumnal rains of Ireland are usually heavy.出自： Ld Macaulay
The autumnal colours were deeper..in the sinking light.出自： M. Drabble