Tell them you have an announcement at just be clear with them
The answer will be learning math
Not for sure what your paragraph is about, but here a few words for you :)
Sui Generis: being the only example of its kind, unique
Profligate: using money, resources, etc., in a way that wastes them
Obduracy: refusing to change in any way
Obstreperous: very noisy or difficult to control
