smoldering intensity

Translations
тлеющая интенсивность
The actor delivered his lines with a smoldering intensity that captivated the audience.
Актёр произнёс свои реплики с тлеющей интенсивностью, которая заворожила аудиторию.
Definitions
A deep, passionate, and often suppressed emotional state that suggests a strong, underlying energy or desire, typically characterized by a slow-burning fervor or tension.
Words
smoldering

adjective
тлеющий
intensity

noun
интенсивность