fustercluck noun 1verb 1forms 3 noun1 •(slang, euphemistic) Spoonerism of clusterfuckGod, what an unbelievable fustercluck, she thought, shaking her head from side to side on her pile of pillows as she remembered Sophie's tear-streaked face as she ran down the block and out of sight. — 2009 verb1 •(slang, euphemistic) Spoonerism of clusterfuck formsfusterclucked · fusterclucking · fusterclucks