Home › Words › P › preinformpreinformpreinform means to inform in advance.Among words judged in Lexicurio's Arena, preinform ranks #33,910 of 42,749 for Qualifying.EtymologyFrom pre- + inform.verbTo inform in advance.e.g.“It is also important to identify a backup contact and also to preinform the contacts of who is responsible to contact them from your firm.” — 2005, David Edward Marcinko, Insurance and Risk Management Strategies for Physicians and Advisors, page 164:Definitions & examples from Wiktionary (CC BY-SA 3.0).