The word “querulous” is an adjective that describes someone who is habitually complaining or expressing dissatisfaction in a whining manner. It refers to a person who is often irritable or inclined to find fault with things.
Interesting fact: The word “querulous” comes from the Latin word “querulus,” which means “complaining” or “lamenting.” It is derived from the verb “queri,” which means “to complain” or “to lament.”