as soon as possible /æz sun æz ˈpɑsəbəl/ /æz suːn æz ˈpɒsəbl/
ASAP /ˈeɪˈɛˈseɪˈpi/ /ˈeɪsæp/
promptly /ˈprɑmt.li/ /ˈprɒmptli/