a heavy hitter

(American)

someone who is powerful and has achieved a lot Have you seen his resumé? He's a real heavy hitter.

Name	Pronounced	Usage
Moisey	mah-ee-SYAY	Russian
Dianna	die-AN-ə	English
Styliani	-	Greek
Tomoko	to-mo-ko	Japanese
Jeanette	zha-NET (French), jə-NET (English), shah-NET (Swedish)	French, English, Danish, Swedish, Norwegian, Dutch
Daphne	DAF-nee (English), DAHF-nə (Dutch)	Greek Mythology, English, Dutch