Для дебилов : .http://dic.academic.ru/dic.nsf/efremova/259372/%D0%A3%D0%BF%D1%80%D1%8F%D0%BC%D0%BE%D1%81%D1%82%D1%8C    .http://www.rulib.info/word/uprjamost.html.http://www.slovopedia.com/15/211/1597676.html