1 synonym for Solide

firm, stable, sturdy, strong, robust, substantial, sound, unyielding, hard, dense, solidified, compact, tough, rigid, inflexible, unbreakable, durable, steadfast, secure, concrete, massive, impenetrable, impregnable, rock-solid, unshakable, unmovable, fixed, established, permanent, reliable, trustworthy, dependable, consistent, coherent, unified, whole, intact, unfragmented, unbroken, contiguous, continuous, uninterrupted, seamless, monolithic, consolidated, hardened, set, firmed, resolute [x]