lifelongpledge

noun
UK /ˈlaɪflɒŋ plɛdʒ/
US /ˈlaɪflɔːŋ plɛdʒ/

A promise you make to keep for your whole life.

She made a lifelong pledge to always help animals in need.


OTHER MEANINGS

2. A serious promise to stay loyal to a person or cause forever.

His lifelong pledge to his best friend never faded.

3. A formal commitment made at a special ceremony to keep doing something good.

The scouts made a lifelong pledge to protect the forest.

4. A strong decision to keep a habit or goal for all your years.

Grandpa's lifelong pledge was to read a book every week.