ühtsete

Could you clarify the context for "ühtsete"? It does not correspond to a widely recognized topic in major reference works. Are you referring to a term in Estonian (and if so, its grammatical role or meaning), a place name, a historical concept, or a different language or field? With a bit more context (language, domain, or intended meaning), I can write a concise, neutral wiki-style article (under 300 words). If you’re unsure, I can also provide a neutral stub outlining possible interpretations and noting the lack of broad attestation.