Definition
To act 'cantankerously' means behaving in a bad-tempered, argumentative, and uncooperative manner 😠. It suggests a disposition to disagree and find fault, often for no apparent reason. Think of someone constantly complaining and criticizing everything around them. 'Cantankerously' contrasts with being cheerful, agreeable, and easygoing. It implies a generally irritable and grumpy demeanor. It's like living with a permanent rain cloud over your head.