unshakable

adjective
UK /ʌnˈʃeɪkəbl/
US /ʌnˈʃeɪkəbəl/

So strong that nothing can make it move or change.

Her unshakable belief in her friends helped her through hard times.


OTHER MEANINGS

2. Not able to be physically shaken or moved.

The old bridge was unshakable even in the strongest storm.

3. Not able to be upset or discouraged.

He stayed unshakable despite all the criticism.

4. Firmly fixed and not likely to change.

They had an unshakable agreement to always tell the truth.