1. plural of mateyness; the quality or state of being matey; friendliness and informality in manner or relationship
Usage: informal; chiefly British

Examples

• The coach's mateynesses with the players helped build team spirit.
• She appreciated the mateynesses of her coworkers in the office.
• The pub's atmosphere was defined by the mateynesses of its regular patrons.
• His natural mateynesses made him popular at social gatherings.
• The mateynesses between the neighbors created a pleasant community feel.