When light reflects off a surface in a soft, wavering way, we say it shimmers. A lake shimmers in the afternoon sun as tiny ripples catch and release the light. Heat rising from hot pavement makes the air shimmer, creating that wavy effect you see on summer roads. Sequins on a dress shimmer as someone moves, catching light from different angles.

The word captures something gentler and more delicate than words like “shine” or “sparkle.” A disco ball sparkles with sharp, distinct points of light, but silk fabric shimmers with a softer, flowing glow. Stars shimmer in the night sky because their light travels through moving air that bends it slightly.

You might describe how moonlight shimmers on ocean waves, or how a hummingbird's feathers shimmer with changing colors. The word works as both a verb (the pond shimmers) and a noun (the shimmer of distant lights). When something shimmers, it seems alive with gentle, dancing light.