New Year's Eve;  December 31
 hidden (talents, etc.);  self-concealment;  self-effacement
 to conceal (oneself);  to hide;  to abscond;  to deceive;  to dissemble;  to fool
 to disappear;  to vanish;  to abscond;  to decamp
 to disappear;  to vanish;  to bolt;  to go into hiding
 ambiguous;  obscure;  equivocal
 to be dazzled by;  to be dizzied by;  to be lost in (greed, lust, etc.); (arch.)  to become dark
 concealing one's talents, position, status, intentions, etc.
 propensity to efface oneself;  being prone to conceal one's talent
 the last day of the year;  New Year's Eve
 soba eaten at the end of the month (esp. at the end of the year)
 The world is covered in darkness;  All is plunged into darkness
 soba eaten at the end of the month (esp. at the end of the year)
 last and first days of the month