Definition

1. Adjective:
   • Having a wavy or wavelike form or surface: "undulating" describes something that moves or appears to move in smooth, wave-like curves; it is often used to describe landscapes, surfaces, or movements that rise and fall gently.
   • Characterized by a continuous, gentle rising and falling motion: This can apply to physical terrain, such as hills or fields, or to abstract concepts like sound or rhythm.

Usage Examples

• Adjective:
  • The undulating hills stretched as far as the eye could see. (The hills formed gentle, wave-like rises and dips.)
  • She admired the undulating pattern of the dunes at sunset. (The sand dunes had a wavy, flowing shape.)
  • The undulating melody of the flute soothed the audience. (The music rose and fell in smooth, wave-like notes.)

Advanced Usage

• "undulating motion": a movement that resembles waves, such as the motion of a snake or a flag in the wind.

  • The snake moved with an undulating motion across the sand. (It slithered by creating wave-like curves with its body.)

• "undulating terrain": land that has gentle slopes and dips, not flat or steep.

  • The hikers enjoyed the undulating terrain of the countryside. (The land rose and fell smoothly, making the walk pleasant.)

Variants and Related Words

• Undulate (verb): to move in a wavy pattern or to have a wavy form.

  • The wheat field undulated in the breeze. (The wheat swayed in wave-like motions.)

• Undulation (noun): a wavy motion or shape; the act of undulating.

  • The undulation of the flag was hypnotic. (The flag’s wave-like movement was mesmerizing.)

• Undulatory (adjective): relating to or characterized by undulation.

  • The undulatory movement of the caterpillar was slow but steady. (The caterpillar moved by creating small waves in its body.)

Synonyms

• Wavy: having a shape or motion like waves.
• Rippling: moving in small waves or gentle undulations.
• Rolling: describing land that rises and falls in gentle slopes.
• Sinuous: having many curves and turns, like a snake.

Related Idioms

• "Undulating rhythm": a pattern of movement or sound that rises and falls regularly.

  • The undulating rhythm of the train lulled him to sleep. (The train’s sound went up and down in a soothing way.)

• "Undulating line": a line that curves back and forth, like a sine wave.

  • The artist drew an undulating line across the canvas. (The line was not straight but had gentle curves.)