SECTION II. INORGANIC MATTER
Solid Matter, continued
Tenacity –N. toughness, strength; cohesion; sequacity; stubbornness (obstinacy); viscidity. leather; gristle, cartilage.
Brittleness –N. fragility, friability, frangibility, fissility; frailty; house of cards, house of glass.
Thesaurus of Words and Phrases by Peter Mark Roget, M.D., F.R.S. Enlarged by John Lewis Roget, M.A., New Edition Revised and Enlarged by Samuel Romily Roget, M.A. Published by Grosset & Dunlap, the edition is copyright 1941, 1947.