verb (used with object), o·ver·sub·scribed, o·ver·sub·scrib·ing.
to subscribe for more of than is available, expected, or required: The charity drive was oversubscribed by several thousand dollars.
Origin of oversubscribe
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
(tr; often passive) to subscribe or apply for in excess of available supply
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012