The term "mininukes" refers to small nuclear weapons with a low yield. When it comes to synonyms for this term, there are a few options. One option is "tactical nuclear weapons," which refers to small weapons that are designed for use on the battlefield. Another option is "micro-nukes," which highlights the small size of these weapons. "Low-yield nuclear weapons" is another potential synonym, as it emphasizes the fact that these weapons have a small explosive force. Finally, "miniaturized nuclear weapons" would also be an appropriate synonym, as it draws attention to the fact that these weapons have been made smaller through technological advancements.