Meaning of HARD-HITTING

WordNet Dictionary
	Definition:		[adj]  aggressively and persistently persuasive; "a hard-hitting advertising campaign"; "a high-pressure salesman" [adj]  characterized by or full of force and vigor; "a hard-hitting expose"; "a trenchant argument"
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	Synonyms:		aggressive, effective, effectual, efficacious, high-pressure, trenchant