cantankerous

As a noun taxonomy

is the science or the technique used to make a classification.

As an adjective cantankerous is

given to or marked by an ill-tempered nature, ill-tempered, cranky, surly, crabby.

Querolous is likely misspelled.

Querolous has no English definition.

As an adjective cantankerous is

given to or marked by an ill-tempered nature, ill-tempered, cranky, surly, crabby.

As adjectives the difference between cantankerous and argumentive

is that cantankerous is given to or marked by an ill-tempered nature, ill-tempered, cranky, surly, crabby while argumentive is being or presenting an argument or line of reasoning.

As adjectives the difference between churlish and cantankerous

is that churlish is of or pertaining to a serf, peasant, or rustic while cantankerous is given to or marked by an ill-tempered nature, ill-tempered, cranky, surly, crabby.

As an adjective cantankerous

is given to or marked by an ill-tempered nature, ill-tempered, cranky, surly, crabby.

As a noun sourbelly is

a cantankerous person.