OnomaUI

biku motion

The motion for "flinch in surprise".

びくっ1 motionOfficial

Sample

Flinch in surprise

Startle / warning

Flinches for an instant, shivers about 6°, then recovers.

Duration
0.36s
Repeats
No
Easing
ease-in-out
Animates
Skew X · Scale skewX scale
Show CSS
@keyframes onoma-biku {
  0% { transform: skewX(0deg) scale(1, 1); }
  10% { transform: skewX(6deg) scale(0.95, 1.04); }
  20% { transform: skewX(-6deg) scale(0.96, 1.03); }
  30% { transform: skewX(4.2deg) scale(0.97, 1.02); }
  40% { transform: skewX(-3deg) scale(0.98, 1.02); }
  50% { transform: skewX(1.5deg) scale(0.99, 1.01); }
  62% { transform: skewX(0deg) scale(1, 1); }
  100% { transform: skewX(0deg) scale(1, 1); }
}

.onoma-biku {
  animation: onoma-biku 0.36s ease-in-out both;
}

/* Reduced motion: no motion */
@media (prefers-reduced-motion: reduce) {
  .onoma-biku { animation: none; }
}

Compare with similar motions

Words for the same motion