The word "unlooked" is spelled with a silent "o" and pronounced as /ʌn.lʊkt/. The "un" prefix means "not," while the root word "looked" refers to something that has been observed or examined. The silent "o" in "unlooked" comes from the older spelling of the word, which used to be "unloked". This spelling change is a result of the evolution of the English language, which often involves simplifying and streamlining the spelling of words over time.
The word "unlooked" is derived from the combination of the prefix "un-" and the verb "look". The prefix "un-" is of Old English origin and is used to negate or reverse the meaning of the word it is attached to. The verb "look" has Proto-Germanic roots and is related to the Old High German word "luoghen" and the Old Norse word "luka", both meaning "to look". So, "unlooked" suggests the opposite of a deliberate act of looking or a lack of attention.