The term 'keep apart' can be defined by four crossword solutions: separate (8 letters), SECLUDE (7 letters), ISOLATE (7 letters), and ESTRANGE (8 letters). Separate means to divide or set apart two or more things, while SECLUDE means to keep away from others or to hide. ISOLATE means to cut off from others or to place in a state of solitude, and ESTRANGE means to cause to be unfriendly or indifferent. All four words imply a sense of distance between two or more people or things.