Diner
Definition 1 of 2
Pro Tip 1/3
Eating Context
Use 'diner' to refer to someone who is actively eating, not just present in a restaurant. The diners at table four ordered the chef's special.
Pro Tip 2/3
Not Always Customers
'Diner' can refer to anyone eating, not necessarily a paying customer. Family members at a reunion could be referred to as diners.
Pro Tip 3/3
Social Setting
'Diner' often implies a social experience, like dining out with friends or family. The diners were laughing and sharing stories over dinner.