Adjective + Noun
Incorrect : The unfortunate was killed in the accident.
Correct : The unfortunate man was killed in the accident.
Note: The noun coming normally after an adjective cannot be left out. But when the noun after an adjective is plural, it can sometimes be omitted. For example:
The rich are not always happy.
Only the brave deserve the fair.
In these examples, ‘the rich’ means 'the rich people’ and "the brave' means "the brave people'. The noun ‘people' is thus often omitted.