adj. performed or made by an end-user who is without professional training in the relevant techniques; as, their house was a do-it-yourself project. Contrasted with factory-made and professional. [ WordNet 1.5 ]

n. a person who often makes objects typically made by professionals, or performs repairs typically performed by professionals, though not having professional training in the relevant art. The term is used mostly to refer to activities related to maintaining a home. [ PJC ]