"the coast is clear" in German The coast is clear. Die Luft ist rein. Detailed translations for "the coast is clear" The coast is clear. The coast is clear. Die Luft ist rein. Psst! The coast is clear. Source: opensubtitles.org Corpus by OPUS Request review Die Luft ist rein. - Mia. The coast is clear. Source: opensubtitles.org Corpus by OPUS Request review - Die Luft ist rein.