Crabbing is a word that refers to complaining or fault-finding in a peevish or nagging manner. If you want to express the opposite of crabbing, you can use words such as applaud, commend, praise, or compliment, which means to express approval, admiration or respect towards a person, thing or action. Other antonyms for crabbing include contentedness, happiness, blissfulness, or satisfaction, which describes a state of comfort, joy, and gratification. Delight or enjoyment are also terms that you can use to express the opposite of crabbing, which refers to feelings of happiness, enthusiasm, and pleasure. In essence, the antonyms for crabbing are words that convey positivity and a lack of negativity or criticism.