How is the comparative of a two syllable adverb formed

b. cronkite, a trusted television personality, declared that the war was unwinnable and told the american people that the government had better find a way out

even though it went against everything the news anchors typically stood for, cronkite voiced an opinion and took a stance, telling the us that there was no way they were going to win, the war was going to end in a stalemate. 

yes, elmers glue is non toxic. i called them a couple months and asked the same question. they said it was