(noun, adjective)


1. bringing death

Similar word(s): deadly, deathly, mortal, lethal, terminal

2. having momentous consequences; of decisive importance

- the fatal day of the election finally arrived

Similar word(s): decisive, fateful

3. (of events) having extremely unfortunate or dire consequences; bringing ruin

- such doctrines, if true, would be absolutely fatal to my theory

- it is fatal to enter any war without the will to win it

Similar word(s): unfortunate, black, calamitous, disastrous, fateful

4. controlled or decreed by fate; predetermined

- a fatal series of events

Similar word(s): inevitable, fateful

Sentences with fatal as an adjective:

- a fatal wound;  a fatal disease;  a fatal day;  a fatal error

- a fatal error;  a fatal exception


1. A fatality; an event that leads to death.

2. (computing) A fatal error; a failure that causes a program to terminate.