What does the cryptic crossword clue "Graham's men don't work energetically (6,3,5)" mean?

The wordplay uses an anagram. anagram of GRAHAM'S + MEN + DON'T = HAMMERANDTONGS The answer is HAMMERANDTONGS.

Graham's men don't work energetically (6,3,5)

Daily Mail Cryptic #17562 | 6 Across | 2025-02-25 flower