1. free from religious sects or denominationalism; not limited or belonging to any particular religious group or groups.

Origin of undenominational

First recorded in 1870–75; un-1 + denominational
Related formsun·de·nom·i·na·tion·al·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for undenominational

Historical Examples of undenominational