shittiest

英 [ˈʃɪtɪɪst]

美 [ˈʃɪˌtɪɪst]

adj.  令人厌恶的; 非常糟糕的; 不公平的; 不厚道的; 卑劣的
shitty的最高级

柯林斯词典

• 令人厌恶的;低劣的;糟糕的
  If someone describes something asshitty, they do not like it or think that it is of poor quality.