Strident describes a sound that's harsh, loud, and grating, the kind that makes you want to cover your ears. A strident voice is unpleasantly sharp and piercing, like fingernails on a chalkboard or a smoke alarm going off at three in the morning.

When someone speaks in a strident tone, their voice cuts through conversation with an aggressive edge. Imagine a crossing guard's whistle versus someone shouting angrily: the whistle is loud and sharp but serves a purpose, while strident shouting feels harsh and jarring. A strident laugh might screech across a quiet library, making everyone wince.

The word can also describe attitudes or demands that feel forceful and inflexible. When people make strident demands, they insist in a way that feels harsh or extreme, leaving no room for discussion. A reasonable request becomes strident when delivered with an aggressive, unyielding tone that puts others on the defensive.

Writers often use strident to signal that something feels too harsh or extreme. A strident alarm, a strident protest, or a strident voice all share that quality of being loud, sharp, and difficult to ignore, whether you're talking about actual sound or someone's forceful manner.