To have a smooth, wavy form or outline; to move with a flowing, rising and falling motion.
The tall grass would undulate as the wind blew through it, a gentle rise and fall that calmed her. It reminded her of the sea she loved, the waves always moving with a smooth, flowing motion.
The thick, grey fur of the bio-luminescent slug seemed to undulate with a strange energy as it crawled across the cavern floor. It moved with a slow, rising and falling motion, its smooth body leaving a shimmering trail behind it.
The giant slug slugs across the damp forest floor, its body seeming to undulate with each slow, deliberate movement. Muscles ripple beneath its skin as it searches for fallen fruit, the thick trail it leaves behind mirroring the rhythmic rise and fall of its progress.
The tiny, fluffy caterpillar wiggled its way across the leaf, its whole body starting to undulate. It looked like a miniature wave rolling through a fuzzy, green ocean, each little hump and dip making it slide along in a wonderfully silly, rippling fashion.
The enormous, squishy blob of purple jelly wobbled on the counter. It began to undulate, its jiggly sides rising and falling like a tiny, gelatinous ocean. Then, with a mighty gulp, it swallowed a rogue blueberry, its outline shifting with a slow, wavy motion.
The crowd watched the flag, its fabric beginning to undulate as the wind picked up, rising and falling with a smooth, flowing motion. A sense of anticipation filled the air, mirroring the flag's gentle, wavy outline against the sky.
The drone's progress report was a mess. Data streams, intended to be clean lines, began to undulate erratically on the screen. Each spike and dip represented a failed sensor reading, a stomach-churning descent into chaos as the autonomous deep-sea excavation unit lost its way.
He watched the bioluminescent algae in the deep-sea trench. The glowing strands seemed to undulate, their soft forms shifting and swaying in the dark currents. It was a mesmerizing, silent dance, a fluid motion that spoke of immense, quiet power.
The massive belly of a sleeping walrus seemed to undulate with each rumbling snore, a gentle rise and fall of blubber that looked surprisingly like a very slow, very hairy ocean wave.
The prize-winning slug race was a spectacle to behold. Competitors, glistening with slime, would undulate across the velvet track, their segmented bodies rippling with surprising speed. Spectators cheered as Bartholomew the Brave managed to undulate his way past a particularly sluggish competitor, leaving a trail of glittery goo in his wake.
The crowd's energy began to undulate, a low hum growing into a swell of cheers. You could see their excitement undulate through the stadium, a wave of feeling rising and falling with each play.
The polished ceramic tiles began to undulate beneath my bare feet, a disorienting sensation. Each step made the floor seem to rise and fall with a smooth, wavy motion, as if the very ground were breathing. I worried the entire structure might collapse.
The tightly packed spools of bio-filament began to undulate slightly on the assembler, a gentle rise and fall as the intricate circuitry wove itself into place. It was a familiar sight, the smooth, wavy form a testament to the machine's meticulous process, a quiet rhythm of creation.
The baker's prize-winning jelly donuts would undulate precariously on the cooling rack, their plump forms a testament to his prodigious skill. A gentle breeze from the open window caused them to undulate, threatening a cascade of sugary confectionary that no one wanted to witness.
The over-enthusiastic jellyfish, Bartholomew, insisted his gelatinous physique could undulate with the grace of a prima ballerina. He'd wriggle his many appendages, attempting a fluid, rising and falling motion, but mostly just looked like a spectacularly soggy sock trying to escape a drainpipe.
Watching the horizon, I felt a profound sense of lassitude. The vast ocean seemed to breathe, its surface beginning to undulate with a slow, consistent rise and fall, a serene rhythm that mirrored the quiescent state of my own spirit.
The immense, bioluminescent leviathan's flanks would undulate with a slow, profound grace as it navigated the abyssal trenches, a living current in the crushing dark. Each massive ripple spoke of immense power held in check, a silent, majestic procession through its frigid domain.
The colossal cephalopod's mantle began to undulate, a deep, resonant pulsing that sent shockwaves through the murky abyssal plain. Its voluminous form shifted with a slow, deliberate rise and fall, its immense outline a fluid silhouette against the faint bioluminescent glow.
The colossal belly of the king, a veritable galleon of gastric indulgence, began to undulate with each hearty guffaw, its considerable circumference rippling like an amoeba attempting synchronized swimming. A veritable undulate odyssey of adipose tissue, it threatened to engulf the entire banquet table.
The gargantuan, cerulean amoeba, affectionately nicknamed "Blobby," began its daily, pre-prandial ablutions. Its gelatinous mass would undulate with such pronounced amplitude, resembling a tempestuous, viscous sea encountering an ethereal breeze, as it attempted to dislodge the stubborn, microscopic space barnacles from its pellucid epidermis.
Normal — Everyday words worth reinforcing.