expression
sweet words; flattery; cajolery
Refers to words that are pleasing to hear but often insincere or manipulative, used to charm, persuade, or deceive someone. Often carries a negative connotation of being seduced by flattery.
See also: おだて
彼は甘い言葉で彼女を騙した。
He deceived her with sweet words.
甘い言葉に惑わされないでください。
Please don't be misled by flattery.
口車 refers to smooth talk or glibness, often in the phrase 口車に乗る (to be taken in by smooth talk). 甘い言葉 focuses on the sweet, alluring quality of the words themselves.
Compound of 甘い (sweet) and 言葉 (words). The figurative use of 'sweet' to describe pleasing but potentially deceptive speech is common across languages.