Compounds of 甚だ

• 甚だ
  (adv) very
  greatly
  exceedingly
  (P)
• 甚だしい
  (adj-i) extreme
  excessive
  terrible
  intense
  severe
  serious
  tremendous
  heavy (damage)
  (P)
• 甚だ以て
  (exp) exceedingly
• 甚だしい誤解
  (n) serious misunderstanding