autumn
UK[ˈɔːtəm]US[ˈɔːtəm]
n
the season of the year between summer and winter, when leaves change color and the weather becomes cooler
Etymology
The word 'autumn' entered English in the late 14th century from Old French 'autompne', which itself derived from Latin 'autumnus'. The Latin term's origin is obscure but may be of Etruscan origin. It replaced the native Old English term 'hærfest' (harvest), which narrowed in meaning to refer specifically to the agricultural activity. The adoption of 'autumn' reflects the influence of French and Latin on English vocabulary following the Norman Conquest, providing a more precise term for the season distinct from the act of harvesting.
Analysis
The word 'autumn' is a simplex loanword from Latin. It does not contain separable morphemes within its modern English spelling.
Examples
The leaves turn beautiful shades of red and gold in autumn.
They plan to get married in early autumn.
Autumn is often considered the season of change.