During an interview Friday on SportsNet New York, Cromartie said the Pittsburgh Steelers star isn't "man enough to hit you when you're looking at him." Ward is widely considered one of the NFL's most aggressive wide receivers, with some opponents calling him dirty.
Cromartie said he doesn't consider Ward dirty, but "I know for a fact that he will hit you while you're not looking."
The comments came one week after Cromartie stirred things up when he called Brady an expletive leading up to the Jets' 28-21 playoff win at New England.
"They're young guys, they're still learning how to play at this level," Cromartie said. "A guy like Mike Wallace, he's maybe the best vertical guy that can get up the field. But I mean, the young guys, they do their job, and that's all you can ask for them to do. You've got rookies coming in still learning how to play in the NFL."
The Associated Press contributed to this report.