Definition of "unmatted"

Instead of spending hours untangling hair, they could bond with friendly conversation (“Your hair looks so unmatted today!”) or by picking apart someone else’s behavior (“Yeah, he was supposed to share the wildebeest, but I heard he kept both haunches”).

2007 October 16, John Tierney, “Facts Prove No Match for Gossip, It Seems”, in New York Times‎