Possible Clues:

• Ad slogan, often
• It's 'frost' to sound and this you've found!
• Limerick, e.g.
• Rum, to some
• What sips and nips do
• Gun, for one
• What "fair" and "square" do
• What ''I,'' and "ky'' do
• It does with crime!
• Verse and worse?