An adjective or adverb that everyone pretends has a general purpose meaning, but in reality is only ever used to modify one word.
The only thing that can be "unrequited" is love. The only thing you can be "voracious" at is reading. The only thing that anyone is "flamboyantly" is gay. So, "unrequited," "voracious" and "flamboyantly" are all modifakers.