Possible Clues:

• 'The __ party': how Theresa May described the Tories in 2002
• Like inclement winter weather
• Unpleasant. Remove the top and it's still unpleasant
• How unpleasant to lose one's head in an unpleasant way
• Beyond mean
• '___, brutish, and short' (how Hobbes described the life of man)
• Disagreeable onset of nettle rash in East End
• Evil leaders expelled from house
• Name a filthy place, and how it might be described
• Not just mean