ソウ, さわ.ぐ, うれい, さわ.がしい

boisterous, make noise, clamor, disturb, excite

JLPT1 G7 S18 F1069

蚤# scratch + 馬 horse → horse scratching at the ground in *irritation* (compare 躁) → *sound*; *noise*; *disturbance*; *uproar*; *tumult*; *turbulence*; *confusion*; *excited*; *agitated*; *clamor*; *fuss*.

[Full Kanji Etymology List]