Sunken/ˈsʌŋkən/ Definition 1 of 4Pro Tip 1/2Physical Appearance Describes a change in someone's appearance, often due to ageing or illness. Grandfather's face looked sunken after his long sickness. Pro Tip 2/2Implies Deterioration 'Sunken' suggests a decline from a better or normal state, not just depth. The abandoned house had a sunken floor, showing its dilapidation.