甚だしい

1. Origins, structure, and basic meaning

• Structure: In 甚だしい (はなはだしい), extreme stem 甚だし plus adjectival い forms the adjective severe.
• Basic usage: 甚だしい often emphasizes that a difference, loss, error, or other usually undesirable condition is extreme.

2. Common pitfalls and similar expressions

• An extreme degree
  • 甚だしく modifies the degree of a following predicate and is stronger than merely saying much or many.