Dangerous infinity refers to something that is potentially hazardous and limitless or unbounded. There are several synonyms that can be used for this term, including perilous perpetuity, hazardous eternity, and risky infinity. These synonyms underline the idea that the danger is ongoing and ceaseless, and may have dire consequences if not addressed. Other synonyms for dangerous infinity include treacherous immensity, deadly vastness, and lethal endlessness. The use of these terms can help to convey the gravity of a situation, highlighting the urgent need for precautionary measures or intervention to mitigate risks and prevent harm.