至極

1. Origins, structure, and basic meaning

• Structure: 至極, read しごく, works adverbially to intensify a judgment or state to an extreme degree.
• Basic usage: It strengthens reasonableness in 至極もっともだ and visible satisfaction in 至極満足そうだ.

2. Common pitfalls and similar expressions

• The predicate modified by 至極
  • In both contexts, 至極 directly modifies the state that follows; it does not name an object on its own.