DELIRIOUS Meaning of DELIRIOUS in English [de.lir.i.ous] adj (1599) 1: of, relating to, or characteristic of delirium 2: affected with or marked by delirium -- de.lir.i.ous.ly adv -- de.lir.i.ous.ness n Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012