Aposiopesis(n.) A figure of speech in which the speaker breaks off suddenly, as if unwilling or unable to state what was in his mind; as, I declare to you that his conduct -- but I can not speak of that, here.
Thesaurus Entries
abbreviature, abrege, abridgment, abstract, apocope, aposiopesis, astriction, astringency, blue-penciling, bottleneck, bowdlerization, brief, cancellation, capsule, censoring, censorship, cervix, circumscription, clipping, coarctation, compactedness, compaction, compend, compression, compressure, concentration, condensation, condensed version, consolidation, conspectus, constriction, constringency, contraction, contracture, crasis, curtailment, cutting, decrease, deletion, digest, diminuendo, draft, editing, elision, ellipsis, epitome, erasure, expurgation, foreshortening, head, hourglass, hourglass figure, isthmus, knitting, narrow place, narrowing, neck, omission, outline, overview, pandect, precis, pruning, puckering, pursing, recap, recapitulation, reduction, retrenchment, review, rubric, shortened version, shortening, skeleton, sketch, solidification, stranglement, strangulation, striction, stricture, striking, summary, summation, survey, syllabus, syncope, syneresis, synopsis, systole, telescoping, thumbnail sketch, topical outline, truncation, wasp waist, wrinkling