Definition of "unperceivably" []

• In an unperceived manner; imperceptibly.

The Century Dictionary (Public Domain)

• "In democracies also it is necessary that the rich should be protected, by not permitting their lands to be divided, nor even the produce of them, which in some states is done unperceivably."
• "These facts curiously show how far the human mind can advance, when led on by customs that operate unperceivably on it, and blind us in our absurdities."