noun. The character of being secretive; tendency or disposition to conceal; specifically, in phrenology, that quality the organ of which, when largely developed, is said to impel the individual toward secrecy or concealment. It is located at the inferior edge of the parietal bones. See cut under phrenology.

noun. The quality of being secretive; disposition or tendency to conceal.

noun. The faculty or propensity which impels to reserve, secrecy, or concealment.

noun. The state or characteristic of being secretive.

noun. the trait of keeping things secret

noun. characterized by a lack of openness (especially about one's actions or purposes)

"His secretiveness is a start, but perhaps they could turn his good intentions in on him (kind of like what they did with Batman in The Dark Knight), choosing between two goods."

abidance  bashfulness  bluffer  complainer  cowardliness