Detainment is a term used to describe the act of holding someone in custody or confinement against their will. There are many synonyms for this term that can be used in different contexts. Some possible synonyms for detainment include arrest, imprisonment, captivity, confinement, custody, detainment, incarceration, restraint, seclusion, and internment. These words may evoke slightly different meanings, depending on the specific situation in which they are used. For example, "arrest" may imply the use of force or a legal basis for the detainment, while "confinement" may suggest a more temporary or informal kind of holding. Regardless of the precise term used, detainment can be a serious violation of personal freedom and requires careful consideration by authorities before it is employed.