1. not cooked enough; insufficiently cooked

Examples

• The chicken was underdone and had to be put back in the oven.
• I prefer my steak medium-rare, but this one is completely underdone.
• The cake looked done on the outside but was underdone in the center.
• She sent back the underdone fish to the kitchen.
• The vegetables were underdone and still quite crunchy.
• Make sure the pork is not underdone before serving it.