Lonelet

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A lonelet is a headmate, specifically a host, that is unaware of their system and believe themself to be a singlet. This is meant as a term for pre-syscovery hosts or hosts in denial about their system. A system may have or may have had several Lonelets.

Related Terms
Astraymates are also unaware of the system, though they are usually not hosts, and intended for systems that are aware of their systemhood.