It’s the voice is the dissatisfied toddler, or the grumpy old man. A grumpy voice is generally unwelcoming and cold, showing that the speaker is discontented with something that might not be entirely evident to the listener.
This voice tells the listener that the performer is in a bad mood, and does not want to be disturbed, like a grumpy old man who doesn't want kids playing on his lawn. Just like a grumpy look, a grumpy voice is impatient and angry.
It is used in movies and television shows on characters who are generally irritable when interacting with other characters. It is also used by comedians to illustrate a cynical character. For their comedic effect, grumpy voices do well in animations and video games. A grumpy character might mutter something under their breath or act completely disinterested. This voice is a great emotional tool that voice artists and storytellers use to connect with the audience.
A grumpy voice can be characterized by suppressed aggression, where it sounds like the performer is upset about something, but don’t want their emotions to be obvious to the listener. In such cases, the voice can occasionally rise, without the knowledge of the performer, as the underlying anger momentarily escapes the grip of their control. It can also be dismissive, which shows the performer’s unwillingness to interact with the other individual in the conversation.
A grumpy voice is usually accompanied by facial expressions showing irritation or disinterest. The aggressive body language really bring out the mood behind the grumpy tone.