Gaudy, flashy, or garish — excessively bold in color, ornament, or taste so as to be unpleasant.
あの広告は色使いがあくどくて目に負担だ。
That advertisement's color scheme is so garish it's hard on the eyes.
彼のスーツは柄も色もあくどくて場にそぐわなかった。
His suit was so showy in pattern and color that it was inappropriate for the occasion.
料理の味が砂糖や油であくどくなってしまった。
The dish ended up tasting cloyingly rich from too much sugar and oil.
Crooked, vicious, or unscrupulous — indicating immoral, nasty, or deceitful behavior or character.
あの会社はあくどい取り立てで評判が悪い。
That company has a bad reputation for its unscrupulous debt-collection methods.
彼はあくどいやり方で契約を勝ち取ったと噂されている。
There are rumors he won the contract by underhanded means.
あの政治家のスキャンダルはあくどい手口だった。
The politician's scandal involved nasty, unscrupulous tactics.