you use this word when someone is extra girlboss slay queen or it is used as a word like, "good" or "fantastic" but better.
It is also a gender neutral term and can be used on anyone of any gender, be the queen/king/monarch you are, slay!
"You're outfit is so fandalamourous! "
"Purr thank you queen/king! "
"Have a fandalamourous day! "
"Wow! Thank you! You too! "