Dictionary.com
definitions

nil desperandum

[neel des-pe-rahn-doo m; English nil des-puh-ran-duh m]
Latin.
  1. never despair.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for nil desperandum

nil desperandum

sentence substitute
  1. never despair

Word Origin for nil desperandum

from Latin, literally: nothing to be despaired of
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