What is another word for "unable"?

Roget's Thesaurus (1911) lists these synonyms for "unable": account, application, apply, arrear, bank, bankrupt, bankruptcy, become, behind, behindhand, bogus, both, break, button, check, cheque, debt, debtor, defalcation, default, defaulter, dishonor, draw, duck, fail, failure, fly, gazette, get, gratis, insolvency, insolvent, insufficiency, lame, left, levanter, make, man, meet, minus.