隠士 is read as いんし (inshi) and means hermit.
いんし
inshi
かくす
to hide
かくれが
retreat
いんきょ
surrendering headship of the family (pre-WWII)
いんご
secret language
かくしひきだし
secret drawer
いんとく
concealment (esp. of wrongdoings or criminals)
かくれる
いんめつ
hiding
おんみつ
spy (for a daimyo, shogun, etc.)
いんたいせいかつ
secluded life
いんぺいこうさく
(creating) a cover-up
かくしばしょ
cache