noisy
躁 centers on restless, agitated noise: a state of noisy, fidgety unease rather than calm sound.
躁 combines 足 (foot) with 喿, a component associated with noise or agitation, suggesting restless, noisy movement of the feet.
The left side is 足 (foot), and the right side 喿 looks like a cluster of mouths (口) making noise. Picture restless feet shuffling noisily, unable to stay still.
For ソウ, imagine the noisy, restless sound of a saw (ソウ) scraping back and forth, matching the agitated, fidgety noise of 躁.
mania
manic depression; mood swing
manic depression; manic-depressive psychosis; bipolar disorder
antimanic (drug, etc.)
manic state
frenzy; delirium; wild excitement
mania
manic switch; entering a manic episode; becoming manic; cycle
cyclothymia
thoughtless; flighty