Correct spelling for the English word "Ganch" is [ɡˈant͡ʃ], [ɡˈantʃ], [ɡ_ˈa_n_tʃ] (IPA phonetic alphabet).
The word "ganch" is primarily used in Irish English slang, and its origin is uncertain. It is believed to have originated from the Romani language, spoken by the Romani people (also known as Gypsies). The Romani language has influenced various English slang terms, and "ganch" is one such example.
In Romani, the word "ganch" (pronounced gānch) means "cheeky" or "mischievous". Over time, it seems to have been adopted by Irish English speakers, particularly in Dublin, where it developed a different meaning. In Irish English slang, "ganch" is commonly used to describe someone who is annoying, troublesome, or difficult to deal with.
The exact path of how the word "ganch" transitioned from the Romani language to Irish English remains unclear.