also: エー・エス・エー・ピー · エイサップ · エーエスエーピー
Borrowed English abbreviation used in Japanese business and casual contexts to indicate urgency. Often used in emails, messages, and spoken requests.
Please send this document ASAP.
I want a reply ASAP.
From English 'ASAP', an acronym for 'as soon as possible'. The katakana forms reflect both the English letter-by-letter pronunciation and the acronym pronunciation.