(ちめいてき)

ちめいてき
na-adjective
fatal; critical; devastating
descriptive
1. fatal; critical; devastating
Causing death or irreparable harm. Used both literally (a fatal wound) and figuratively (a critical flaw, a devastating mistake).
致命的(ちめいてき)ミス(おか)した
I made a fatal mistake.
This defect is critical for the product.
The data leak dealt a devastating blow to the company's credibility.

致命的(ちめいてき) is a na-adjective formed from 致命(ちめい) (causing death) + (てき) (adjectival suffix). While it can describe literally fatal situations, the figurative usage (critical flaw, devastating problem) is more common in everyday speech.

Common collocations

Usage

In computing and technology, 致命的(ちめいてき)エラー is the standard translation for "fatal error." The word is very common in business and news contexts to describe problems that could cause irreversible damage.