sweet + -en

source: coffee sugar | gifとanime 、 sweet

make or become sweet or sweeter, especially in taste:

(砂糖などを加えて)…を甘くする(up).

e.g. with object : a cup of coffee sweetened with saccharin

甘くなる, 甘味が増す

e.g. no object : her smile sweetened.

with object make more agreeable or acceptable:

〈味･におい･音など〉をよくする; 〈取引など〉に色をつける

e.g. there is no way to sweeten the statement.

with object informal induce (someone) to be well disposed or helpful to oneself:

｟くだけて｠ (物などでつって)〈人〉を思うように動かす, 〈人〉の機嫌をとる(up); ｟文｠ 〈人〉をなだめる(up).

e.g. I am in the process of sweetening him up.

see pill1.

add to the total sum of bets made in poker.

add an inducement, typically in the form of money or a concession:

e.g. he is trying to sweeten the pot, offering workers a 50-cent raise.