Festigkeit {f}, Festheit {f}	fastness
Festigkeit	fastness
Lichtechtheit {f}	fastness to light
Wasserechtheit {f}	fastness to water
Bügelechtheit {f}	fastness to ironing
Reibechtheit {f}	fastness to rubbing
Waschechtheit {f}	fastness to washing
Meerwasserechtheit {f}	fastness to salt water
Wassertropfenechtheit {f}	fastness to water drops
Chemischreinigungsechtheit {f} [textil.]	fastness to dry-cleaning
Schweißechtheit {f}	fastness to perspiration
Schwimmbadwasserechtheit {f}	fastness to swimming pool water