Definition

1a. Of a serpentine or wavy form: winding

b. marked by strong lithe movements

2. intricate, complex.

(Ref: Merriam-Webster Online, Word of the Day, 30 September 2020)

Use it in a sentence

He glimpsed her in flashes, in bright vibrant moments, as his eyes flicked between her real body and the one on the canvas in front of him. He had a habit of biting his lower lip when he painted, to the point that he had a permanent blister. He snagged it now, on an incisor, and winced.

She raised her eyebrows and one side of her mouth curled upwards in an amused smile.

He cleared his throat and looked back at the canvas.

She was sinuous, both in the sense that his eyes could wend their way down the curves of her hip, her breasts, her calves. And in the way she stretched now and then on the plush crimson sofa, taut but sensuous like a cat in the sun. She often lay on her side, her head propped up in one hand until she got pins and needles in her arm. Then she would lay her heard directly onto the pillow, tucking both hands under her cheek. Once, she fell asleep like that, and he stood for a full five minutes unable to do anything but look at her.

He hadn’t known where to start – how to capture her luminosity. She had been patient. Five sittings now, and only a small but unconcealed yawn now and then. They never spoke. That would be too much for him. And yet in that time, he felt as though they had come to know and understand one another. He was completely besotted.

She owned his heart, his soul, utterly and completely and she didn’t even know it.

He glanced at her for the thousandth time. They locked eyes this time and she raised her chin slightly and smiled slowly. Then she gave him a long and deliberate wink before throwing her head back and laughing long and loud.

Oh, she knew it.