Correct spelling for the English word "finking on" is [fˈɪŋkɪŋ ˈɒn], [fˈɪŋkɪŋ ˈɒn], [f_ˈɪ_ŋ_k_ɪ_ŋ ˈɒ_n] (IPA phonetic alphabet).
The term "finking on" is an idiomatic expression primarily used in informal or colloquial English. It refers to the act of secretly or treacherously informing or betraying someone to authorities or figures of authority. It implies divulging confidential or incriminating information about another person's wrongdoing or misdeeds, often in a sneaky or disloyal manner.
"Finking on" typically suggests an act of betrayal or betrayal of trust, involving revealing sensitive details or evidence to authorities with the intent of causing harm or retribution towards the individual being reported. This can be motivated by personal gain, such as avoiding punishment or securing favoritism, or even out of a sense of personal resentment or vengeance.
The expression originated from the colloquial British slang term "fink," which is synonymous with informant or snitch. The act of "finking on" someone usually implies a perceived breach of an unwritten code of loyalty or camaraderie, as the one who exposes secrets or wrongdoings is often seen as a traitor within certain social circles.
In summary, "finking on" refers to the act of betraying or snitching on someone by revealing private or incriminating information, typically leading to repercussions or punishment for the person being reported. It denotes an act of disloyalty or treachery, often motivated by personal gain or a desire to harm the individual being reported.
The phrase "finking on" does not have a commonly known etymology. It is possible that you may be referring to the phrase "grassing on", which originates from British slang. The word "grass" in this context means to inform against or betray someone to the authorities. The precise etymology of the term is uncertain, but some theories suggest it may have originated from the rhyming slang "grasshopper" (copper, meaning police officer). However, without additional context or clarification, it is difficult to determine the specific etymology of the term you mentioned.