<title type="display">unannounced</title> adjective inesperat. an unannounced increase in bus fares una pujada inesperada de les tarifes de l'autobús. adverb we arrived unannounced vam arribar sense avisar.
<title type="display">unanswerable</title> adjective [question] incontestable. [attack, etc.] irrebatible, irrefutable.
<title type="display">unanswered</title> adjective [question] sense contestar, incontestat. [letter] per contestar, no contestat.