From Wiktionary, the free dictionary
いんとく • (intoku)
- 陰徳: (ethics) Good done in secret, specifically the act of doing good secretly, for its own sake
- 隠匿: hiding, concealment
いんとくする • (intoku suru) suru (stem いんとくし (intoku shi), past いんとくした (intoku shita))
- 隠匿: to conceal