One who cannot easily pleased:

One who cannot easily pleased: Correct Answer Fastidious

The one word substitution is Fastidious.

Cosmopolitan : familiar with and at ease in many different countries and cultures.
Frightening : making someone afraid or anxious; terrifying.
Feminist : a person who supports feminism.
Fastidious : very attentive to and concerned about accuracy and detail.
Bissoy MCQ

Related Questions

One who is not easily pleased by anything =
One who is not easily pleased by anything
Identify the substitute word for the sentence "One who is not easily pleased by anything".  
Which one is the correct passive form of the sentence 'Your conduct pleased me'?
Fill in the blanks : She was very pleased by the appreciation she received like every one else, she enjoyed being---
She was very pleased by the appreciation she received . Like every one else, she enjoyed being ____.
I am pleased to write this letter of----- Mr. Sumon. Choose the one word or phrase that best completes the sentence.
Each of the following sentence is divided into five parts, 1,2,3,4 and 5. Point out which part is grammatically incorrect. If there is no mistake mark 5. "I am pleased to sanction one" (1) "special increment" (2) "to all the employees "(3) "with this month" (4)."No error" (5)
Because she had reputation for---we were surprised and pleased when she greeted us so---
We must look pleased or else he'll be-----