1. Na-adjective (keiyodoshi), Adverb taking the 'to' particle, Noun

   busy; hurried; rushed

2. Expressions (phrases, clauses, etc.)

   yours sincerely; yours in haste

   letters ending with this start with 前略, 冠省, etc.see 草々

3. Na-adjective (keiyodoshi), Noun

   simple; brief; quick

   Archaic

Also written 怱々【そうそう】sousou、匆匆【そうそう】sousou、怱怱【そうそう】sousou