indestructible
Indestructible (adj) means Impossible to destroy or break; extremely durable. Example: “The toy is marketed as indestructible, but my dog proved otherwise within a day.”
How to use indestructible
Learner’s notesIn plain EnglishSo tough or resilient it can't be broken or ruined — literally or figuratively.
Fill the gap
Can you complete this real example?
The toy is marketed as _____, but my dog proved otherwise within a day.
Etymology
From in- ("not") + destructible.