Pronunciation: (dāt'lis), [key]
1. without a date; undated.
2. endless; limitless.
3. so old as to be undatable: a dateless rock formation.
4. of permanent interest regardless of age: a dateless work of art.
5. having no social engagement.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.