defailance

noun

variants or defaillance

plural -s

obsolete

: lack, omission, failure

Word History

Etymology

French défaillance, from Old French defaillance, from defaillir to fail, be lacking + -ance

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now