What does the cryptic crossword clue "Dad is upset, in feeling of contempt (7)" mean?

The definition is "contempt". The wordplay uses an anagram. anagram of DAD + IS + IN = DISDAIN; definition: "contempt" The answer is DISDAIN.

Dad is upset, in feeling of contempt (7)

Telegraph Prize Cryptic #3177 | 1 Down | 2022-09-11 flower