A yojijukugo meaning sweet, seductive words used to manipulate or flatter someone. Often carries a negative connotation of insincere praise.
Don't be fooled by his honeyed words.
It's not good to try to move people with flattery.
甘言 is a simpler term for sweet words or flattery, while 甘言蜜語 is a more emphatic yojijukugo with the same meaning.
蜜語 is a rare, literary term for sweet talk; 甘言蜜語 combines it with 甘言 for a stronger, idiomatic expression.
A yojijukugo composed of 甘言 (sweet words) and 蜜語 (honeyed words), both meaning flattery or seductive speech. The exact historical origin is uncertain, but it follows a common pattern of combining synonymous compounds for emphasis.