There are several synonyms for the phrase "hold someone for ransom," including "kidnap for ransom," "hold hostage for ransom," and "extort ransom." These phrases all refer to a terrible situation in which a victim is forcibly taken and held against their will, with the demand of a ransom payment in exchange for the victim's safe release. Other synonymous phrases could include "hostage-taking," "abduction for ransom," and "ransom kidnapping." It is important to recognize that these acts are illegal and morally reprehensible, and should never be condoned in any form or fashion. If you or someone you know is in danger or has been abducted, it is important to seek help immediately from authorities.