Letters that make autumn
a, n, m, t, u are letters that make 'autumn'
autumns is a word created by adding a letter to 'autumn'
1 possible definitions for 'autumn'
Under this definition, autumn is a noun and has the following properties:
fall has the same meaning as autumn
'autumn' can be a type of season, time of year.
Indian summer, Saint Martin's summer, autumnal equinox, fall equinox, September equinox are parts of 'autumn'.
autumnal is a derivative of autumn.