Depending on the context of the sentence the following words mean "important" in it's many forms.
"wichtig", "bedeutend", "einflussreich", "entscheidend", "maßgeblich", "nennenswert"
Wichtig = Important in German
German Unity Day is important because it marks the anniversary of the reunification of East and West Germany on October 3, 1990. It represents the end of decades of division and symbolizes the unity and strength of the German people. This holiday is a celebration of both the historical significance and the successful reunification process that transformed Germany into a unified country once again.
high German
The German coat of arms represents the unity and identity of the German people. It has historical significance, symbolizing the nation's heritage and traditions. The coat of arms is a source of national pride and a reminder of Germany's rich history and culture.
Wichtig
Apples
Brandenburger Tor
it's pretty important
It's not. I am german and before I came here, I never eaven heard of it before.
Please see the link for a timeline of German history.
Oktoberfest is important as it is a celebration of Bavarian culture, bringing people together to enjoy traditional food, music, and beer. It has become a significant cultural event that has gained international popularity, attracting visitors from around the world to Munich, Germany. It also generates significant economic benefits for the region through tourism and local business participation.
The important German airline is called "Lufthansa".