What is another word for "discontinuity"?

Roget's Thesaurus (1911) lists these synonyms for "discontinuity": arrear, break, caret, complete, crude, defalcation, default, defect, defective, deficiency, deficient, deficit, failing, fall, gap, going, half, halves, hand, hole, hollow, immaturity, imperfect, imperfection, incomplete, incompletely, incompleteness, insufficiency, insufficient, interval, lack, lacuna, lame, link, meager, measure, missing, neglect, noncompletion, nonpreparation.