adverb
- in a manner characteristic of or befitting someone who is brainsick; foolishly or madly
Usage: archaic; literary
Examples
- He brainsickly pursued a scheme that no reasonable person would consider.
- She spoke brainsickly of her wild ambitions without any practical foundation.
- The character acted brainsickly throughout the play, driven by delusion.
- He brainsickly abandoned his responsibilities to chase an impossible dream.