Usage examples for vagueness:

• Perhaps the vagueness about the major's private residence and the mystery which hung over him outside his clubs may also have excited prejudice against him. "The Firm of Girdlestone" – Arthur Conan Doyle

• The trouble is the vagueness of the words of the Socialist propaganda. "The Red Conspiracy" – Joseph J. Mereto

• The commander was depending on the vagueness of the information that may have filtered down from the north. "Despoilers of the Golden Empire" – Gordon Randall Garrett

• It is entirely free from violence and from vagueness those two besetting sins of so much modern poetry. "Reviews" – Oscar Wilde