An 'imperious' person is one who behaves like someone who has authority or power, but is unjustified and arrogant.
'To galvanize' something usually refers to the act of carpentry or steelwork, where the worker coats an iron or steel with a protective layer. However, the word may also mean 'to excite or shock someone into taking action'.
An 'egregious person' is one who does something shockingly terrible or obviously wrong.
The word 'edify' means to lift up, or to improve and give instructions to someone. It usually refers to the mind or morals.
The word "diurnal" refers to activities that are happening or active during daytime; it can also be the opposite of the word 'nocturnal', which means 'active during the night'.
The word to describe animals active during dawn and dusk is "crepuscular".