Whining is a common behavior in people that is often seen as annoying and frustrating. It is the act of complaining or moaning in a high-pitched, irritating manner. Some synonyms for whining include: complaining, grumbling, griping, moaning, murmuring, whimpering, grizzling, fretting, kvetching, and bellyaching. These words are often used interchangeably to describe someone who is expressing dissatisfaction or frustration in an unpleasant tone. It is important to note that while these words have similar meanings, they may also have slightly different connotations. For example, complaining implies a verbal expression of unhappiness while grumbling suggests a quieter, more muttering form of discontent.