most aiding (adjective) convenient: appropriate, useful
Sinonime: anterior, basic, beginning, early, elementary, inaugural, incipient, inductive, initial, initiatory, opening, original*, precursory, prefatory, preliminary, prelusive, preparative, preparatory, primary, prior, proemial, provisional, rudimentary, starting
Antonime: awkward,
inappropriate,
inconvenient,
ineffectual, inopportune, unadaptable, unhandy, unsuited, unuseful