The phrase "blew skyhigh" typically indicates something has been destroyed or ruined beyond repair. Some antonyms for this phrase would be "constructed steadily," "built soundly," or "flourishing steadily." These phrases imply that something has been developed with care and is thriving. Other antonyms could include "held strong," "maintained stability," or "endured confidently." These phrases suggest that something has been able to withstand the test of time and remain intact. When looking for antonyms for "blew skyhigh," it is important to consider words that communicate stability, strength, and durability.