Steely describes a quality of being hard, cold, and unyielding, like steel itself. When someone has a steely gaze, their eyes are fixed and intense, showing fierce determination or resolve. A steely voice sounds firm and unshakeable, without warmth or wavering.

The word often appears when describing people facing difficult situations. A ship captain steering through a dangerous storm might show steely nerves, staying calm and focused when others panic. An athlete competing in a championship might display steely determination, refusing to give up despite exhaustion or setbacks.

Steely can also describe physical things that resemble steel: steely gray clouds before a thunderstorm, or the steely gleam of a polished blade. But most often, it describes an emotional quality of strength and hardness. When someone becomes steely, they push away softer feelings and become tough and resolute.

The word usually suggests admirable strength, like when a leader shows steely resolve during a crisis. But it can also suggest coldness or harshness, like a steely refusal to forgive or a steely lack of compassion. Context matters: steely determination helps you finish a marathon, but a steely heart that never softens can cost you friendships.