unreliablepledge

noun
UK /ˌʌnrɪˈlaɪəbl plɛdʒ/
US /ˌʌnrɪˈlaɪəbəl plɛdʒ/

A promise that you cannot trust to be kept.

He made an unreliablepledge to fix the bike, but he never did.


OTHER MEANINGS

2. A commitment made without real intention to follow through.

Her unreliablepledge to help clean up was forgotten by lunchtime.

3. A guarantee that is likely to fail when tested.

The company's unreliablepledge of free repairs upset many customers.

4. A statement of support that cannot be depended on in hard times.

His unreliablepledge of friendship vanished when trouble came.