an iron fist in the velvet glove

an iron fist in a velvet glove

A person who has a gentle, sweet, or unassuming appearance or disposition, but who in reality is particularly severe, forceful, and uncompromising. Tom is in for it now with his wife. She might seem like a nice lady to us, but she's an iron fist in a velvet glove. The new leader of the country rose to power with promises of democracy and equality, but as his despotic intentions came to light he soon proved to be an iron fist in a velvet glove.
See also: fist, glove, iron, velvet
Farlex Dictionary of Idioms.

an iron fist in the velvet glove

If you describe someone or something as an iron fist in the velvet glove you mean that they look gentle but in fact they use a lot of force. There is an iron fist in the velvet glove of the charming Irishman as he plots to make Leeds the top team of the new millennium.
See also: fist, glove, iron, velvet
Collins COBUILD Idioms Dictionary, 3rd ed.
See also:
  • an iron fist in a velvet glove
  • an iron hand in a velvet glove
  • iron hand
  • an iron hand
  • an iron fist
  • an iron fist/hand
  • iron fist
  • fade up
  • get out of the wrong side of (the) bed
  • wake up on the wrong side of (the) bed