Lookup and identify the word in the sentence
She was aghast at his lack of consideration.
The word in the sentence is 'aghast.' It is an adjective that means feeling great horror, shock or dismay.
Complete the following task based on the instruction and optional input provided.### Instruction:
Lookup and identify the word in the sentence

### Input:
She was aghast at his lack of consideration.

### Output:
The word in the sentence is 'aghast.' It is an adjective that means feeling great horror, shock or dismay.