i Register
In some senses, aestiferous is marked as obsolete, figuratively. Watch for register when choosing this word.
adj
As the tide, turbulent; ebbing and flowing.
Thus they, estiferous, the hollow sphere Within, rack’d, and raged against the Highest.
Producing much (aestival) heat.
Moreover, if the analogy to political revolution teaches anything at all, its instruction would seem to be that revolution is a wasteful and excessively estiferous process.