The phrase "support strand" refers to a strong, stable foundation on which something can be built or anchored. Synonyms for this phrase include backbone, pillar, mainstay, foundation, core, keystone, cornerstone, underpinning, bedrock, and anchor. These words all suggest something that is dependable, essential, and fundamental. A support strand is vital for anything that needs to stay upright or secure, whether it's a physical structure like a building or an abstract concept like an argument. When we say that someone or something is a support strand, we are acknowledging their crucial role in upholding the things we rely on.