unfailing

adjective
UK /ʌnˈfeɪlɪŋ/
US /ʌnˈfeɪlɪŋ/

Something that is unfailing never stops or never lets you down.

She met us with unfailing kindness every single day.


OTHER MEANINGS

2. Always available and never running out.

The garden had an unfailing supply of fresh water.

3. Never making a mistake or failing.

His unfailing memory helped him win the quiz.

4. Showing steady and loyal support.

Her unfailing support helped him finish the race.