unfailing

/ʌnˈfeɪlɪŋ अन्ˈफे़लिङ्‌/ adj.

that you can depend on to always be there and always be the same विश्‍वसनीय, भरोसेमंद; जिसमें कोई चूक न हो

unfailing devotion/support

She fought the disease with unfailing good humour.

▶ unfailingly adv. विश्‍वसनीय रूप से, बिना चूके

unfailingly loyal/polite