Q-ness

From Memory Alpha, the free Star Trek reference

Q-ness is an attribute that a Q should have. According to Q, 'Q-ness' is an ideal that is too difficult for a Human to understand.

After Q Junior gave a speech to show what he had learned to Kathryn Janeway and Q in 2377, Q thought that the speech did not show any 'Q-ness'. (VOY: "Q2")