In the book The Giver, the meaning of the word hasty in the sentence below is this: Done quickly
What is the meaning of the word?
In the sentence provided, the word hasty means to do something quickly. Here, the elders are talking about the failure of the last person who received the memory.
The elders are now saying that they have to be careful with their next selection of the Receiver as the last Receiver of Memory had not carried out the duties appropriately. So, the meaning of the word in this case is 'we have not done quickly this time.'
Complete question:
In the book The Giver what is the meaning of the word hasty in the sentence below
We have not been hasty this time,” she continued. “We could
not afford another failure.”