That is the correct spelling for "autumn" (the fall season).
Autumn.
You can spell it either Autum or Autumn, or you can be creative and create your own variation or the name.
秋天 Qiū tiān
That is the correct spelling of automobile (car).
The correct spelling is guard. (This is a common letter transposition.)Unless you're trying to spell "gourd" (a small squash that people use for autumn decorations).
The 'opposite' of Autumn is Spring. The opposite of Autumn (Fall) is Spring.
Autumn.
Autumn.
You can spell it either Autum or Autumn, or you can be creative and create your own variation or the name.
L'automne
The correct spelling of the season (fall) is autumn.
秋天 Qiū tiān
The season, which inspires the female given name, has only the one usual spelling "autumn." There do not seem to be many creative respellings.
The word "autumn" in Hebrew is stav (סתו) but this is not used as a name. If you just want to spell the English name "Autumn" in Hebrew letters, it's אוטם
The fall season is spelled autumn. A large, high lobby is an atrium.
That is the correct spelling of automobile (car).
The season after summer is spelled "autumn" in American English or "fall" in colloquial usage. Both spellings are correct.
The letters can be used to spell the 9 letter word evaluates. They also spell the 8 letter words emulates, evaluate, eventual and nauseate. They spell the 7 letter words alumnae, alumnus, autumns, avenues, enamels, leanest, mantels, meanest and tamales.