built on sand
- unstableProne to sudden change
- shakyTrembling or unstable
- foundationUnderlying support structure
- crumblingBreaking down gradually
- collapseSudden structural failure
fragile · quicksand · shifting · eroding · precarious · flimsy · unreliable · temporary · sinking · illusion · castle · tide · waves · foolish · parable · beach · shoreline · wash away
- Building metaphorsfoundation, building blocks, cornerstone, pillar, framework
- Precariousnessprecarious, unstable, teetering, tottering, wobbly
- worthless thingsnot worth a dime, not worth a hill of beans, dime a dozen, two-bit, good for nothing
foundation stability
built on sandrock-solid
Utterly firm and reliable
well-grounded · firmly established · deeply rooted · well-founded · bedrock
reliability/trustworthiness
built on sandwell-founded
Having sound basis
substantiated · evidence-based · tried and true · time-tested · proven
substantiality
built on sandrobust
Strong and durable
substantial · evidence-based · tried and tested · time-tested · proven