Synonyms for impregnability

Most common

adamant · invulnerability · undefeatability · unbeatability · unbeatableness

All synonyms

Noun

Definitions

1. n. 1

   The quality or state of being impregnable; invincibility.

Example sentences

• adamant I tried to talk him out of it, but he was adamant.

Popularity over time

Use in printed books, per decade from 1850 to 2019.

By length

7 letters

adamant³

13 letters

unbeatability

14 letters

unbeatableness

15 letters

invulnerability⁷, undefeatability

The small number after each word is its number of syllables (adamant³ = 3 syllables).