What does inexcusable mean?
Inexcusable is a formal adjective meaning that something cannot be excused or justified. It describes conduct, decisions, failures, or other actions that are considered so seriously wrong, irresponsible, or inappropriate that ordinary explanations or apologies are insufficient. The word is commonly used in moral, legal, professional, and political contexts, as in “inexcusable behavior” or “an inexcusable failure.” Its force comes from combining a clear judgment with a refusal to allow mitigating circumstances: an action may have an explanation, but it is not merely inexcusable if that explanation can make the action acceptable. When applied to a mistake or failure, the term indicates that responsibility cannot be evaded. Because it carries a strong negative judgment, inexcusable is especially suitable for formal writing and serious discussion rather than casual or neutral descriptions of ordinary inconvenience.
adjectiveToo serious or inappropriate to be excused or justified. Used to describe conduct, behavior, mistakes, failures, or other actions that cannot be reasonably forgiven.
- Too serious, wrong, or inappropriate to be excused or justified.
"The team's failure to protect the confidential data was inexcusable."
"Leaving a child unattended in a locked building was inexcusable."
"The newspaper described the government's decision as politically inexcusable."
An explanation may account for a mistake, but an inexcusable mistake cannot be excused.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does inexcusable come from?
Inexcusable was formed in English from the Latin prefix in-, meaning “not,” together with excusable, which is based on Latin excusare, “to excuse.” The underlying Latin verb excusare was itself formed from ex-, meaning “out” or “from,” and causa, meaning “cause” or “accusation,” and came to mean “to free from blame.” The English adjective developed with the sense “not able to be excused,” retaining its strong moral and evaluative force.
Related word forms
How inexcusable is actually used
A formal and strongly evaluative term, used especially for moral, legal, professional, or institutional failures. It is stronger than simply describing something as wrong and implies that no reasonable justification can be offered.
Easily confused with inexcusable
Inexcusable means impossible to excuse or justify, whereas inexplicable means difficult or impossible to explain.