Adverb
(superlative of `near' or `close') within the shortest distance
Source: WordNetProbably the closest things to perfection are the huge absolutely empty holes that astronomers have recently discovered in space. If there's nothing there, how can anything go wrong? Richard Brautigan
Writing books is the closest men ever come to childbearing. Norman Mailer
A woman is closest to being naked when she is well-dressed. Coco Chanel
There are formalities between the closest of friends. Japanese Proverb
God is closest to those with broken hearts. Jewish Proverb
You are always closest to yourself. Swedish Proverb