頓絶法(とんぜつほう、または黙説法、Aposiopesis)とは、語り手または作者が、何かの考えにとらわれて途中まで進めていた発言に間を置くか、発言をやめてしまう修辞技法のこと。
(noun) an abrupt breaking off of an idea mid-sentence that suggests the speaker didn't want to or could not continue.
The speech was so well planned, that the audience was convinced that the president's aposiopesis was unplanned.