Substitute most appropriate word for following from the given options:
use of mild words in place of words required by truth

euphemism

The most appropriate word for use of mild words in place of words required by truth is euphemism.

• Euphemism is a mild or indirect word or phrase used in place of one that is considered to be harsh, unpleasant, or offensive.
• Indelible means impossible to erase or remove.
• Abstruse means difficult to understand or comprehend.
• Platitude is a trite or unoriginal remark.