Unaided means done without help from anyone or anything. It usually comes after the verb, describing how someone managed: 'she walked unaided', 'he can now eat unaided', 'the team finished the job unaided'. It can also sit before a noun, as in 'unaided recall' or 'the unaided eye'. Two places you meet it constantly are worth knowing. The first is health and recovery: doctors, nurses, and news reports use unaided to mark a milestone — standing unaided, breathing unaided, walking unaided after surgery — because for a patient, doing it without help is the whole achievement. The second is 'with the naked eye' territory: 'too faint to see unaided' means without a telescope or glasses, so here the missing help is a tool, not a person. In market research, 'unaided awareness' means the brands people name with no list given to them. Unaided is formal and slightly clinical; in ordinary talk people say 'on his own', 'by herself', 'without help'. Note that it says nothing about how well the thing was done — only that no help was involved. And it points at a task actually being performed, so you attach it to an action, not to a lonely person; 'he lives unaided' sounds wrong where 'he lives alone' is right.