Crotchetiness is a term used to describe someone who is irritable, grouchy, or easily annoyed. Opposite to it is the word amiability, which characterizes an individual who is friendly, agreeable, and easy to please. Affability, kindness, and geniality can also be considered as antonyms for crotchetiness. These terms connote a pleasant and friendly personality. Additionally, expressions such as cheerfulness, gentleness, and empathy are also antonyms for crotchetiness, as they imply a benevolent and compassionate attitude towards others. Overall, the opposite of crotchetiness is a welcoming and amiable demeanor.