1. plural of bluffness; the quality or state of being bluff (direct, frank, and somewhat abrupt in manner or speech)
Usage: countable and uncountable uses; often appears in formal or literary contexts
2. plural of bluffness; the quality of being bluff (having a broad, steep front, as a cliff or headland)
Usage: nautical or geographical; less common than the first sense

Examples

• The captain's bluffnesses in addressing the crew sometimes offended the more sensitive sailors.
• Her bluffnesses made her unpopular at diplomatic functions, where subtlety was valued.
• The bluffnesses of the coastal cliffs made them a striking landmark.
• Despite his bluffnesses, people respected his honesty and straightforward approach.
• The various bluffnesses of his personality emerged in different social settings.