The term 'Kept to Oneself' can be summarized by two crossword solutions: INWARD (6 letters) and HOARDED (7 letters). INWARD is an adjective that means directed or moving toward the inside or center, while HOARDED is a verb that means to accumulate and store up for future use. Together, these two words suggest someone who is introverted and keeps their thoughts and feelings to themselves, as well as someone who is careful with their resources and does not share them easily.