蒼茫[soubou] dusky 茫然[boozen] dumbfounded 茫然自失[bouzenjishitsu] stupor 茫漠[boubaku] boundless 往事渺茫[oujibyoubou] memories of the past events (being, becoming) far and distant
往事茫茫[oujiboubou] memories of the past events (being, becoming) far and distant 茫茫[boubou] wide expanse of flat surface (e.g. sea, plains) 草茫々[kusaboubou] covered with weeds 渺茫[byoubou] vast