for a long time, indefinitely (think of it as the opposite of temporarily)
Opposite (closest): vorübergehend
A fun look at the meaning of "dauern" and how to use it as a translation for "to take time" . Also: some cardio. Condolences :).
dauern, die Dauer, dauernd, andauern, die Ausdauer, während, bedauern,...
A fun look at the meaning of "haft" and its family. A ride that'll take us from a jail sentence all the way to a stapler pin. Ernsthaft?! Yup, ernsthaft :)
haft, haften, verhaften, die Haft, zwanghaft, zweifelhaft, das Heft, heften, der Hefter, heftig