For a serious student of Danish, there is no real alternative to learning the gender of each word at the same time as learning the word itself. The notes below represent my attempts to form some rules for my own use, to help me remember which nouns are t-words. Be warned though that none of these rules are completely reliable. Things which usually come as part of a series or group, or which are not normally identified individually, are usually t-words. Nouns which are unchanged in the plural are almost always t-words and vice versa.
Languages are t-words, because of sprog.
Countries are t-words, because of land. Substances are t-words. Hence additiv, casino, circul re, cv, forum, hotel, job, system, tribunal, trick, universitet. This page maintained by Gordon Smyth , Department of Mathematics , University of Queensland .