Select the most appropriate one-word substitution for the given group of words.

The act of detaining someone specially during war or due to any political reason 

Internment

The most appropriate one-word substitution for "the act of detaining someone specially during war or due to any political reason" is internment.

• Deferment is a postponement of something, such as military service.
• Detainment is the act of detaining someone, especially for questioning or investigation.
• Internment is the confinement of people, especially enemy aliens, in a camp during war.
• Polyandry is the practice of having multiple husbands.