What does the cryptic crossword clue "Resented being drugged inappropriately (7)" mean?

The definition is "Resented". The wordplay uses an anagram. anagram of DRUGGED = GRUDGED; definition: "Resented" The answer is GRUDGED.

Resented being drugged inappropriately (7)

Guardian Cryptic #28969 | 14 Across | 2023-01-17 flower