'Faire de l'athlétisme, ce n'est pas Cher' is grammatically correct - assuming you keep the ponctuation. Ce n'est pas Cher de faire de l'athlétisme or Faire de l'athlétisme ne coute pas Cher are other possibilities.
Cher's name and the word Cher of the french language are not related but the word Cher in french means "expensive".
c'est cher is the translation in French. This is the phrase meaning expensive in French.
No, Cher is a mix of Cherokee, English, French, and Armenian.
Cher Monsieur is Dear Sir. if you know his name is Dupont, write Cher M. Dupont
"Dear love" is an English equivalent of the French phrase cher amour.Specifically, the masculine adjective cher means "dear." The masculine noun amour means "love." The pronunciation will be "she-rah-moor" in French.
cher, mon cher, chéri depending of the relationship with him
pas Cher
Cher monsieur
cher/chère
"Expensive" in French is spelled "coûteux."
Cher oncle
cher oncle