What does knuckler mean?
A knuckler is an informer: someone who reports another person's misconduct, especially to the police or other authorities. The term is informal and derogatory, suggesting betrayal, opportunism, and a willingness to serve the interests of a more powerful person. In North American usage, it can also describe someone who submits meekly to pressure or accepts conspicuously unfavorable terms without protest. In that sense, it implies not necessarily deliberate wrongdoing but an appearance of weakness or excessive compliance. The word is most natural in accusations, disputes, and descriptions of personal conduct, and it should generally be avoided in neutral or formal contexts. Although both meanings are unfavorable, the informer sense is more strongly associated with betrayal, whereas the submissive sense concerns servility or failure to resist.
An informer who reports other people's wrongdoing.
"The investigation revealed that one of the witnesses was a knuckler."
Strongly derogatory and informal; often implies betrayal for personal advantage.
A person who submits meekly or accepts unfavorable conditions without protest.
"The agreement made the defeated negotiator look like a knuckler."
Chiefly North American informal usage.
The usual plural form for people described as knucklers.
"Several former employees accused their former supervisor of being one of the knucklers."
A knuckler may submit outwardly while quietly giving others away.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of knuckler
The word was formed in the 19th century from “knuckle” and the agent-forming suffix “-er.” It developed in connection with the idea of yielding or making a person yield, including the reporting of wrongdoing. Modern usage preserves both the informer sense and, especially in North America, the sense of a person who submits meekly.
How knuckler is actually used
This is an informal and strongly derogatory term. In North American usage it often means a servile person, while in British and North American usage it can also mean an informer. The intended sense should be clear from context.
Easily confused with knuckler
A knuckle is a joint of the finger or a hard projection; a knuckler is a derogatory term for an informer or an excessively submissive person.