Antonyms for the word "Frangibility" are words that refer to qualities that are opposite to the characteristic of being easily broken or shattered. Some possible antonyms for this word include "durability," "sturdiness," "toughness," "resilience," and "hardiness." These words suggest a level of strength, toughness, or flexibility that stands up to stress, strain, or impact. For instance, a car made of durable metal might survive a crash and be less prone to frangibility. Likewise, a sturdy structure would be less likely to crumble under pressure, where frangible ones would break apart readily. Antonyms for frangibility thus refer to the qualities of an object or material that make it less fragile or breakable.