What is 'mon ami préféré' when translated from French to English?

"My very dear friend" is one English equivalent of the French phrase mon très cher ami.

Specifically, the masculine possessive adjective monmeans "my." The adverb très means "very." The masculine adjective cher means "dear." The masculine noun ami means "(male) friend."

The pronunciation will be "moh treh sheh-rah-mee" in French.