KPalso: ケーピー · ケイピーFreq.FrequencyTop 50,000Meanings1interjectioncheersslangSlang interjection used when toasting, derived from the initials of 乾杯 (kanpai). Common in casual online or text communication.See also: 乾杯今日きょうはお疲つかれ!KP!Good work today! Cheers!みんなでKP!Cheers, everyone!