Of course the best way is to memorize the “die” as a part of the word. However, there may be cases where you just might not be sure. Here are some noun endings that may indicate that the noun is feminine. I just want to clarify that this isn’t 100% true in all cases, but it’s a good guideline.
-heit : die Freiheit (freedom)
-keit : die Müdigkeit (tiredness)
-tät : die Universität (university)
-ung : die Zeitung (newspaper)
-schaft : die Erbschaft (inheritance)
-ie : die Geographie (geography)
-ik : die Musik (music)
-ei : die Wäscherei (laundry)
-enz : die Frequenz (frequency)
-anz : die Toleranz (tolerance)
-ion : die Kommunikation (communication)
-a : die Pizza (pizza)
-e : die Seuche (epidemic)
-ur : die Konjunktur (economic trend)
-in : die Studentin (student) The “in” is a common feminine noun ending. It indicates female people, occupations and nationalities.
