1. the quality or state of being alien, foreign, or unfamiliar

Examples

• The alienness of the customs made the travelers feel uncomfortable.
• She was struck by the alienness of the landscape after moving to the desert.
• The alienness of the technology confused the older generation.
• His sense of alienness in the new country gradually faded over time.
• The alienness of the situation left everyone uncertain how to proceed.
• The film captured the alienness of life on a distant planet.