Smoldering

Part of Speech: Noun

Definition: Denoting or showing barely suppressed anger, desire, or another powerful emotion.

Source: Oxford Dictionaries

Found in ” Choi Jeong Min” Franny Choi (line 13)

I looked up this word because the placement and context of the word are interesting. The speaker uses the word like something is happening behind the curtain in the poem. Also this word could have another meaning but I think this definition fits in the poem.