The term "universal frame" refers to a structure or framework that can be used in a wide variety of contexts without requiring significant modifications. Some possible synonyms for this phrase might include "versatile framework," "all-purpose chassis," "omni-use skeleton," "multifunctional architecture," or simply "adaptable design." Other related terms that might also be used to describe a universal frame could include "flexible structure," "modular framework," or "scalable blueprint." Ultimately, the specific words used to describe a universal frame will depend on the precise connotations and associations that the speaker or writer is trying to evoke.