undeceivable

adjective

un·​deceivable

¦ən+

1

obsolete : not deceiving : not deceitful

2

: not capable of being deceived

undeceivable common sense

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