taut
Pulled tight with no slack or looseness.
Taut means pulled or stretched tight, with no slack or looseness. A taut rope stretches straight between two points without sagging in the middle, like a tightrope walker's cable or a properly pitched tent line. When you pull a rubber band between your fingers until it's completely stretched, you've made it taut.
The word often describes physical tension. A sail becomes taut when wind fills it, pulling the fabric tight. A taut bowstring means the archer has drawn it back, ready to release. Muscles can be taut too: when you flex your arm, the muscles become tight and firm under your skin.
Beyond physical objects, taut can describe situations filled with tension or suspense. A taut thriller keeps you on the edge of your seat, every scene wound tight with anticipation. A taut silence in a classroom might follow a teacher's serious question, the quiet stretched thin with nervous energy.
The opposite of taut is slack or loose. A slack rope hangs limply, a loose sail flaps uselessly in the wind. When something needs to work properly under tension, like a drum head, guitar string, or trampoline, keeping it taut makes all the difference.