Word of the day, Flak Our word of the day from The Arbiter is Flak Meaning of flak Intense or harsh criticism, blame, or opposition. READ MORE: Word of the day, Vainglory Synonyms of Flak Backlash Reproach Censure Disapproval Pronunciation of Flak /flæk/ Example Late Hajia Alhassan was the type of person who was ready to take the flak for others if anything went wrong. Share with us a sentence with the word Flak, Let's see how well you understand it.