autumnal
adj. B2 Upper Intermediate US //ɔˈtəmnəɫ// UK //ˈɔːtʌmnəl// au·tum·nal
adj. relating to the season of autumn. It describes things that happen in the fall or have a feeling of being cold and dark.
adj. relating to the season of autumn; having a character or quality associated with the fall of the year. Often carries a literary or slightly formal tone.
The garden is full of autumnal colors.
The city takes on a quiet, autumnal atmosphere as the leaves begin to fall and the days grow shorter.
The poet's latest collection captures a melancholic, autumnal mood, using imagery of decaying leaves and fading light to reflect on the passage of time.
Borrowed from Latin autumnāl(is). By surface analysis, autumn + -al.