ISOLATE came from the 19th Century English verb word 'isolated', meaning a person or thing that has been or become isolated.
The word Sherpa derive from the Sherpa Language 'sherpa' or 'sherwa' denoting to a demographical origin of eastern Tibet. Sherpa is a Tibetan ethnic group found in mountains of Nepal, Tingri County and Himalayas.
RECAPITULATE means to summarize again and state the main points already said.
BOONDOGGLE coined by Robert H. Link from †1957 American scoutmaster, first known in 1928. Its has two meanings - a neckerchief slide made of braided cord worn by Boyscout; and a project that is just a waste or impractical l thing to do one example involves graft.