Mon. Regardless of gender, french words starting with a vowel take "mon" so that there are not two vowels in a row.
mon chéri
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The two common words for husband in french are epoux and mari.
I have only a few words in French, but I think you mean mon ami, which is French for 'my friend.'
mon Dieu means 'my God' in French.
Je t'aime mon frère
Mon oreille (feminine noun) means "my ear" in French.
The French phrase "mon frère" means "my brother" in English.
In French, "my king" is translated as "mon roi."
'mon fils' means 'my son' in French.
Mon amour means "my Love" in French.