Answer:
delighted
Step-by-step explanation:
This is how you can reasonably deduce the meaning....
The word 'but' introduces a contrastive idea to the one preceding it. Assuming that the reader knows the meaning of the word 'delighted,' then the reader can conclude that the word 'livid' must mean the opposite of that.
'Delighted' means happy, so 'livid' means unhappy or mad. IN actuality, 'livid' means like "hot-like-the-sun angry." (in other words, very, very, mad)