unbreakable

/ ʌnˈbreɪkəbəl /

adjective

1. not able to be broken

Example Sentences

The prime minister's official spokesman added that the next 48 hours would see an "unbreakable friendship reach new heights".

From BBC

The last word went to Mohammed Siraj, who personified the unbreakable spirit and never-say-die attitude of a young India team.

From BBC

For decades, countless U.S. officials have proclaimed that the bonds between the United States and Israel are unbreakable.

From Salon

Their stand was the second-highest for the sixth wicket for England and looked unbreakable until the new ball was taken.

From BBC

And that all it might take is denial with a chaser of fear to topple a democracy that once felt unbreakable.

From Los Angeles Times