Adjective patterns with what
The 'impressive' group
These adjectives indicate that someone thinks that something is good or important, or, less frequently, bad.
admirable attractive disturbing good great important impressive significant wonderful worrying
What is so disturbing about the legal process is that it's so clinical.
Everyone agrees that what is most important about the plan is the fact that the allies now agree on something.
What was impressive about her was that she was unwilling to talk about her talent unless pressed.