Related Clues:

• Inapt anagram of "heart"
• One who's constantly talking smack
• One-star review writer
• Troll on a fan page
• One without a kind word to say
• Shade thrower
• One has nothing nice to say
• Troll, at times
• Mean critic
• Twitter troll, often
• Someone who detests something
• One that can’t stand half-hearted party host
• Modern lead-in to -ade
• One dislikes headgear carried by old queen
• Snarky critic