Introducing Princess Beatrice in Utah in high spirits
I believe the answer is:
upbeat
'high spirits' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how one could define the other.
'introducing princess beatrice in utah in' is the wordplay.
'introducing' suggests taking the first letters.
'beatrice in' becomes 'bea' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'utah' becomes 'ut' (I've seen this in other clues).
'in' is an insertion indicator.
The first letter of 'princess' is 'p'.
'p'+'bea'='pbea'
'pbea' inserted inside 'ut' is 'UPBEAT'.
Can you help me to learn more?
(Other definitions for upbeat that I've seen before include "Cheerful - positive about the future" , "Optimistic, positive" , "Optimistic - anacrusis" , "Of mood, cheerful and optimistic" , "in every bar" .)