We have no meanings for "even formal" in our records yet.
1 With Mary Bower she spoke no longer, not even formal words.
2 She taught him to be polite, and even formal , rather than free-and-easy and rude.
3 There is clearly an equal tension between photographer and sitter: a mutual, even formal encounter.
4 His words were cold and dry, even formal .
5 In conversation, he is calm and self-possessed, even formal , but he buzzes with a tightly wound energy.
6 To my great satisfaction, the new Lord Holland has not taken the least friendly, or even formal notice of me, on Lord Waldegrave's death.
7 The handclasp was brief, even formal and there was no look in his eyes to indicate the presence of anything but the most casual emotions.
Grammar, pronunciation and more
This collocation consists of: