Crossword Clue:

Stubborn ones

AnswerCrossword Clue
DONKEYSStubborn ones.
MULESStubborn ones
DIEHARDSStubborn ones.
HARDHEADSStubborn ones
ASSESStubborn ones
SETIN... one's ways (stubborn)
ENDERSBitter-.. (stubborn ones)
ORNERYStubborn; set in one's ways.