This is the 10193rd most frequent French word.
impensable
Unthinkable.
The word 'impensable' is used here to denote something inconceivable or unimaginable due to social norms or etiquette.
Il est impensable de partir sans dire au revoir.
It is unthinkable to leave without saying goodbye.
Here, 'impensable' describes something that seemed impossible or unlikely in the context of historical societal expectations.
Des changements aussi rapides dans la société étaient autrefois impensables.
Such rapid changes in society were once unthinkable.
In this instance, 'impensable' conveys a personal assertion or belief about what is unacceptable or unimaginable due to preferences or emotional connections.