How do you spell this word? Def: Heavy criticism

[HugoTroop]

How do you spell this word? Definition: Heavy criticism.

"NSO has taken a lot of [word] for their decision to replay the rules"

Correct Answer:
Flak. It's based on the German acronym "FlaK", from "FlugabwehrKanone", meaning anti-aircraft gun. The term was adopted by both the Germans and western Allies to refer to any sort of anti-aircraft fire. This became metaphorically adapted to mean harsh criticism.

"Flack" is generally used to mean an agent of the press. Those other spellings are there for fun.