Font choice upset grand poet (9)

I believe the answer is:

godparent

I'm a little stuck... Click here to teach me more about this clue!

'font choice' is the definition.
Although both the answer and definition are singular nouns, I cannot see how one could define the other.

'upset grand poet' is the wordplay.
'upset' indicates an anagram.
'grand'+'poet'='grandpoet'
'grandpoet' with letters rearranged gives 'GODPARENT'.

Can you help me to learn more?

(Other definitions for godparent that I've seen before include "Baptism sponsor" , "Pet dragon (anag)" , "as one responsible for charge" , "Religious guardian" .)

I've seen this clue in The Times.

Want a hint initially instead of a full solution? Install my app