Carpingly is an uncommon word that means to complain or nag persistently in a petty or trifling way. Some synonyms for carpingly include grouchy, grumbly, peevish, whiny, and nitpicky. Grouchy suggests a bad-tempered attitude, while grumbly implies a habit of frequent complaining. Peevish connotes a disposition to petulance or irritability, while whiny suggests an obnoxious or high-pitched tone. Nitpicky, on the other hand, refers to someone who is overly concerned with trivial details. If you want to describe someone who is always complaining in an annoying and persistent way, there are plenty of words to choose from that convey the same meaning as carpingly.