energy level

noun

: one of the stable states of constant energy that may be assumed by a physical system

—used especially of the quantum states of electrons in atoms and of nuclei

called also energy state

Examples of energy level in a Sentence

Recent Examples on the Web

Madrid’s physical and energy levels also really seemed to drop in the second half — a sign of the fitness issues which were a problem for both Ancelotti and Alonso, and also of a lack of confidence and conviction. —Dermot Corrigan, New York Times, 15 Jan. 2026

Our energy level was just not there. —Rick Armstrong, Chicago Tribune, 15 Jan. 2026

These supplements raise blood iron levels, increase hemoglobin production, enhance oxygen delivery, and boost energy levels. —Ayesha Gulzar, Verywell Health, 14 Jan. 2026

Since a common side effect of taking a GLP-1 is tiredness, reducing caffeine intake seemed like a proactive way to avoid compounding fatigue and to support better overall energy levels. —Lauren Manaker, SELF, 14 Jan. 2026

Word History

First Known Use

1902, in the meaning defined above

Rhymes for energy level

• mediaeval
• bevel
• devil
• daredevil
• sublevel
• multilevel

Kids Definition

energy level

noun

: one of the stable states of constant energy that may be assumed by a physical system

—used especially of the states of electrons in atoms