What is another word for "qua"?

Roget's Thesaurus (1911) lists these synonyms for "qua": able, absorbing, agreement, ask, bind, call, cannot, case, casus, charge, claim, come, command, condition, conditional, conditionally, contract, covenant, create, crying, death, deficiency, demand, desiderate, desideratum, desire, destitute, dispense, essential, essentiality, exaction, exigency, exigent, for, guarded, have, imperative, indispensability, indispensable, injunction.