"Samorafu" is a combination of the verb "morafu" (meaning wait) and the prefix "sa", which was added to fix the rhythm of the word, and the verb "morafu" is thought to have come from the verb "moru" (meaning lookout, guard) and the suffix "fu", which was added to include the nuance of "existence" or "continuance".
「サモラフ」は動詞「モラフ（候）」に語調を整える接頭語「サ」が接続したもので、「モラフ」は動詞「モル（窺・守）」に存在・継続の意の助動詞（動詞性接尾語ともいう）「フ」が接続して生まれた語であると推定されている。