Pronunciation: [lˈuːzɪz stˈiːm] (IPA) 
The phrase "loses steam" is commonly used to describe something that gradually loses momentum or energy. The spelling of 'loses' includes only one 'o,' whereas 'looses' would imply a releasing or letting go of something. The IPA phonetic transcription of 'loses' would be /luzɪz/, with a long 'u' sound followed by a 'z' sound at the end. The word 'steam' is spelled as it sounds, with the IPA transcription being /stiːm/.
The phrase "loses steam" is an idiomatic expression used to describe a situation when an activity or process gradually slows down, decreases in intensity, or loses momentum and effectiveness. This phrase is derived from the literal meaning of "steam," which refers to the force or energy generated by boiling water that drives an engine or machine. In a figurative sense, "losing steam" has come to represent the diminishing power, vigor, or enthusiasm behind an endeavor.
When an activity loses steam, it implies that it is losing its initial drive, becoming weaker, or faltering in some way. This can happen due to various reasons such as lack of interest, fatigue, loss of motivation, or encountering obstacles that make progress difficult. For instance, a project or a discussion might start with great enthusiasm but later loses steam as participants lose interest or the initial excitement fades away.
The expression "loses steam" is often used in contexts of progress, growth, or success. It suggests that a once-intense activity gradually loses its force, slows down, or becomes less effective. It is sometimes used to describe a dwindling trend, declining support, or a loss of momentum in various fields, such as politics, business, sports, or even in personal relationships. Overall, "loses steam" signifies the diminishing energy or drive behind an endeavor, indicating a decrease in its overall effectiveness over time.
The phrase "loses steam" originated from the steam engine technology of the 19th and early 20th centuries. The word "steam" in this context refers to the power generated by the steam engine. When a steam engine operates, it converts heat energy into mechanical power, often used to drive various types of machinery.
Metaphorically, the term "loses steam" emerged as a figurative expression in the English language to describe a loss or decrease in energy, momentum, or enthusiasm. When something "loses steam", it symbolizes a reduction in power, speed, or effectiveness, similar to how a steam engine slows down or comes to a halt when it runs out of steam.
