feetfirst adjective 1adverb 1 adjective1 •With one's feet going first.On the feetfirst top-top with a 19-inch hole, your body is tilted to about a 35-degree angle on entry. — 1965 adverb1 •With one's feet going first.So DeCamilli, sliding feetfirst, undercuts the Bomber and sends him sliding into the wall. — 1988
