unsolicited promotion; uninvited solicitation
Legal and consumer-protection term for promotional approaches made without prior consent, such as spam or aggressive sales tactics.
Unsolicited promotions are regulated under the Specified Commercial Transactions Act.
Calls involving uninvited solicitation are increasing.
Compound of 不 (negative prefix), 招請 (invitation), and 勧誘 (solicitation). The exact historical derivation is uncertain; the term is primarily used in modern legal contexts.