Solidity rhymes with:
validity, validity, acidity, fluidity, humidity, liquidity, morbidity, rapidity, rigidity, superfluidity, timidity, turbidity, validity
Solidity sounds like:
sailed, salad, salada, salata, sallade, salt, salted, salty, salute, saluted, sault, sausalito, scald, scalded, scaled, schield, schild, schildt, schilt, schlitt, schlott, schooled, schuld, schuldt, schult, schulte, scold, scolded, scowled, sealed, seclude, secluded, seewald, selda, sellout, sewald, sexuality, shackled, shacklett, shalt, shelled, shellito, shield, shielded, sholto, should, sigwald, silhouette, silhouetted, silt, sizzled, skilled, skillet, skylite, slade, slat, slate, slated, sled, sledd, sleet, sleeth, sleuth, slid, slide, slit, sloat, sloate, slot, slota, sloth, slott, slotted, slowed, slut, slutty, so-called, socalled, socialite, soiled, sold, soldo, soledad, solid, soliday, solita, solitude, solliday, solt, soltau, solti, squalid, sullied, sult, swallowed, swelled