If you spend profusely as if you had money like Bill Gates, you would be a profligate!
“Immaculate” refers to being clean and spotless, without any blemish. “Maculate” is just the opposite, although not as commonly used.
Remember “Moribund” as “Mortal at the end”. The mortal person is at the point of death! Remember thus.
“Poseur” is someone who strikes a pose to impress others. In reality, he/she is very different from what he/she is trying to project.
“Conflation” should remind you of convergence of two flats to make a bigger flat! You just break the wall between the two flats to make a bigger house! Remember thus.
The suffix “-phile” refers to a person having fondness for something. Remember this always. Just “-phobe” is a suffix which refers to fear for something.