promposal

[ prom-poh-zuhl ]
/ ˌprɒmˈpoʊ zəl /

noun

the act of inviting a date to a prom, often using props or gifts in a staged or choreographed scene: The elaborate promposals at our school have become insanely competitive.

Origin of promposal

First recorded 2005–10; blend of prom + proposal
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019