• (n.) Tendency to mislead or deceive. • (n.) The disposition to deceive; as, a man`s deceitfulness may be habitual. • (n.) The quality of being deceitful; as, the deceitfulness of a man`s practices. Found on http://thinkexist.com/dictionary/meaning/deceitfulness/
De·ceit'ful·ness noun 1. The disposition to deceive; as, a man's deceitfulness may be habitual. 2. The quality of being deceitful; as, the deceitfulness of a man's practices. 3. Tendency to mislead or deceive. 'The deceitfulness of riches.' Matt. x... Found on http://www.encyclo.co.uk/webster/D/15