stain;  spot;  smudge;  spot (on one's skin, e.g. chloasma, liver spot);  blemish;  discoloration
 to soak into;  to permeate;  to penetrate
 to pierce;  to penetrate;  to sting (wound or sensitive area, etc.);  to smart;  to be infected (with vice);  to be steeped (with prejudice)
 to be indelibly stained or ingrained;  to be dyed in deeply
 to sink deeply into one's mind;  to come home to;  to go to one's heart;  to pierce one's body (e.g. of wind, cold, etc.)
 to penetrate;  to pervade;  to spread
 to soak into;  to permeate
 to ooze;  to exude;  to percolate;  to soak through
 to sting one's eyes;  to make one's eyes smart
 to feel keenly;  to strike to the core;  to touch to the quick;  to pierce deep inside (e.g. cold)
 to soak through;  to be deeply impressed
 dish of vegetables, konnyaku, etc. simmered in soy sauce and water until the liquid is almost gone
 to perfume clothes by burning incense
 to blot;  to stain;  to smudge
 keenly;  deeply;  calmly;  quietly;  fixedly (e.g. gazing, staring)
 spot removal, esp. from the skin;  spot remover (carpets, etc.)