Conundrum is a noun, meaning, confusing and difficult problem or question.

 Example: The administration is facing a familiar conundrum.

Time will doubtless provide the answer to that conundrum.

Synonyms: problem, puzzle, enigma, difficulty etc

Cursory an adjective, which means 

hasty and therefore not thorough or detailed 

Example: Only a cursory inspection of the building's electrical wiring was done. The mayor gave a cursory glance at the report.

Synonyms: casual, half-hearted, inattentive, superficial etc

Penurious is an adjective, which means 

 Extremely poor, poverty-stricken  

Example: The government of the Democratic Republic of Congo is so penurious that its annual health spending per person could not buy a copy of any newspaper.  

Synonyms: destitute, necessitous

 Perilous is an adjective, which means 

 Extremely dangerous 

Example: Since the journey is perilous, be sure to bring a first-aid kit

Synonyms: Dangerous, hazardous, risky

Apotheosis (noun)

meaning: the highest point in the development of something; a culmination or climax.

Example: They are almost falling over themselves to explain how modest the proposals are—it is the apotheosis of modesty in some ways.

Synonyms: climax, culmination, zeal, summit, pinnacle etc