The correct spelling of "most looking" is actually "most-looking" with a hyphen. This compound adjective is pronounced as /məʊstˈlʊkɪŋ/ in IPA phonetic transcription. It means "having the most looking or appearance of something". The hyphen is necessary to indicate that the two words together form a single adjective. It is important to use correct spelling and punctuation to convey precise meaning and clarity in communication.
The phrase "most looking" does not have a specific etymology. "Most" is an adverb that originated from Old English "mǣst", meaning "greatest" or "very". "Looking" is a present participle of the verb "look", which comes from Old English "lōcian". Therefore, "most looking" can be seen as a combination of these two words, indicating the act of looking in a heightened or intense manner.