In British English, the word “daughter” is pronounced with a vowel sound that is used commonly in British English, but is no longer used in American English. In American English, “daughter” has the same vowel sound as the word “father” (pronounced “dah-der”). The sound is pronounced with a more open mouth and further forward in the mouth than the British English sound. The lips are not rounded. The expression “Like mother, like daughter” means that a daughter has similar traits to her mother.