glaringly

adverb3

1. •
   In a glaring manner.
2. •
   With intense light.

   • […] the light now on, now off, now on too glaringly, now too dimly, with the glow of a fitful dying battery—then at last to know the whole town plunged into darkness […] — 1947
3. •
   (figurative) So as to be highly visible or obvious; so as to attract notice or attention.

   • The error was glaringly obvious, yet nobody said anything about it.