Suspenseful describes something that keeps you in a state of anxious uncertainty, waiting tensely to find out what happens next. A suspenseful movie might have you gripping your seat as the hero sneaks through a dark warehouse, not knowing if the villain is lurking around the corner. A suspenseful book chapter might end right when a character discovers something shocking, leaving you desperate to turn the page.

What makes something suspenseful is the way it builds tension and anticipation. In a suspenseful story, you know something important is about to happen, but you don't know what or when. Will the detective solve the mystery before time runs out? Will the team win the championship game in the final seconds? That feeling of being on edge, of holding your breath while you wait, is what suspense is all about.

Writers and filmmakers create suspenseful moments deliberately, using techniques like ominous music, dramatic pauses, or clever plotting. When a teacher announces she has “something important to tell the class” and then pauses to shuffle papers, that's a small suspenseful moment, too.