Chunder is a verb, slang that originated in Australia. It means to throw up or vomit. It can also be used as the noun for what is thrown up or the vomit itself.
Chunter is a little more well known. It is also a verb and slang, from British English. It can mean either to mumble or murmur about one’s troubles, or it can mean to lumber along making noise. It can also be a noun for the actual complaint given.
The young man is seen becoming visibly ill as the clock ticks, before a female colleague shouts: “Gonna chunder!” [The Telegraph]
None are more effortlessly infuriating than the lads from Ladbrokes, the newly-arrived bookies from the Old Dart whose advertising brains trust – Brisbane-based‘The Really Quite Good Ideas Company’ (if the irony isn’t apparent yet, give me a minute) – decided that not only are a fool and his money easily parted, but that the average male sports fan would be hard-pressed attending a child’s christening without getting plastered, tackling the priest to the ground and then chundering into the holy water. [The Guardian]