light a fire under: Idiom Meaning and Origin

What does ‘light a fire under’ mean?

The idiom "light a fire under" means to motivate or inspire someone to take action or work quickly. It conveys the idea of applying pressure or urgency to someone in order to increase their productivity or efficiency.

Idiom Explorer

Unleashing the Blaze

The idiom "light up" is related to the phrase "light a fire under". Both idioms convey a sense of bringing energy and enthusiasm to a situation. When we "light up" something, we are illuminating it and bringing it to life. Similarly, when we "light a fire under" someone, we are inspiring or motivating them to take action and become more active.

The phrase "kindle-fire" is another idiom that can be connected to "light a fire under". To "kindle" means to start or ignite something, often used in the context of a fire. When we "light a fire under" someone, we are metaphorically kindling a fire within them, sparking their motivation and pushing them to move forward. This idiom reinforces the idea that the action we take has the power to ignite change and drive progress.

The fire's flickering light stimulated their motivation and urgency.

Another related idiom is "feed the fire". Just as we add fuel to a fire to keep it burning, when we "light a fire under" someone, we are providing them with the necessary motivation or encouragement to keep going. We are fueling their passion and pushing them to continue their efforts. This idiom emphasizes the importance of ongoing support and encouragement in order to maintain momentum and achieve success.

The idiom "flame up" is another expression that can be linked to "light a fire under". When something "flames up", it quickly becomes intense or dramatic. Similarly, when we "light a fire under" someone, we are trying to create a sense of urgency and intensity in their actions. We want them to become fully engaged and invested in what they are doing, bringing their full energy and focus to the task at hand.

Lastly, we have the idiom "light the blue touchpaper". The phrase "light a fire under" can be seen as a modern-day equivalent of this idiom. "Lighting the blue touchpaper" refers to the act of igniting a firework or explosive, which produces a sudden burst of energy and excitement. Similarly, when we "light a fire under" someone, we are aiming to create a burst of motivation and enthusiasm that propels them into action.

Example usage

Examples of how the idiom "light a fire under" can be used in a sentence:

  1. She needed someone to light a fire under her if she was going to finish her project on time.
  2. The coach threatened to light a fire under the team if they didn't start practicing harder.
  3. We need to light a fire under the marketing team to generate more leads for our company.

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