1. plural of abruptness; instances or qualities of being sudden, unexpected, or steep
Usage: formal

Examples

• The abruptnesses of his mood changes concerned his family.
• The trail’s various abruptnesses made it challenging for inexperienced hikers.
• She was startled by the abruptnesses in his speech patterns.
• The landscape featured several abruptnesses that created dramatic views.
• The abruptnesses of the policy changes left employees confused.