Substitute Word to Avoid Saying a Ruder Word
Puzzle 8 of Prestigious Universities Medium Pack
Question is: Substitute Word to Avoid Saying a Ruder Word
and the answer is: EUPHEMISM
Word Meaning:
EUPHEMISM — (uncountable) The use of a word or phrase to replace another one that is more offensive, blunt or vulgar.
Definitions from Wiktionary.