How do I know whether a word is 'Der/Die or Das'?

There is no simple or unique rule for telling the gender of a word so it is important to learn the gender with the word when you are learning new vocaulary. However, there are some common word endings that tend to match with a specific gender: Der: -en, -el, -ling, -ismus, -ner, -ig, -ich, -er Die: -ung, -schaft, -ion, -heit, -keit, -tat, -age, -enz, -esse, -euse, -ur, -ik, -e