What is another word for "incompleteness"?

Roget's Thesaurus (1911) lists these synonyms for "incompleteness": abra, absence, abysm, abyss, addle, alone, anvil, arrear, barranca, battle, between, breach, breachy, break, caesura, canon, caret, chap, chasm, chink, cleft, clove, collapse, complete, crack, cranny, creek, crevasse, crevice, crude, cut, defalcation, default, defect, defective, deficiency, deficient, deficit, defile, dike.