aught 
/ˈɑ:t/ pronoun
/ˈɑ:t/ pronoun literary + old-fashioned : anything
▪ For aught I know [=for all I know], he could have left an hour ago. [=I don't know when he left]
▪ For aught I know [=for all I know], he could have left an hour ago. [=I don't know when he left]
