Chinese-like forms / Words JLPT 1
          2570 Mandarin
  だんだん 段々 dandan gradually, step by step song s2218 渐渐 jiànjiàn
  どんどん   dondon rapidly, steadily song s2218 匆匆 cōngcōng
             
4459 たまたま 偶々 tamatama by chance, unexpectedly, accidentally 2334  
  わざわざ 態々 wazawaza expressly; specially 2171 1212  
  ときどき 時々 tokidoki sometimes 655 song a187b  
4119 ぞくぞく 続々 zokuzoku successively; one after another  
  ますます 益々 masumasu more and more, increasingly 1256 1399  
4607 ちゃくちゃく 着々 chakuchaku steadily  
             
3501 じょじょに 徐々に jojo, jojoni slowly, gradually, little by little 2387  
  じょうじょう 上々 joojoo the best    
             
  なかなか 中々 nakanaka (with positive predicate)
very; considerably; fairly; quite
747 D1-L4-A4 Grammar fg117
    中々 nakanaka (with negative predicate)
easily; readily; by no means
1682  
             
  ぐいぐい   guigui doing something forcefully and continuously    
  ぐいぐい動く   guigui ugoku moving vigorously    
  ぐいぐい飲む   guigui nomu swig; Drink it all up    
             
  すみずみ 隅々 sumizumi every nook and corner songs687  
             
2618 sa- left   zuŏ
    左側 sasoku left-hand side 2570 745  
  させつ 左折 sasetsu left turn    
    u- right   yòu
  うせつ 右折 usetsu right turn