evildoer

good and bad

evil intent

affirms one's resolution to do something regardless of possible consequences

vicious

(Tw) excuse me; to be sorry (from Taiwanese, Tai-lo pr. [pháinn-sè])

unable to tell good from bad (idiom)

to break the law and commit crimes (idiom); malefactor

bad person

(Tw) to have been dealt a hard lot in life (from Taiwanese, Tai-lo pr. [pháinn-miā])

used in front of a verb, to bring out an obvious decision or action that should be taken no matter what; anyhow; in any case; by any means

unable to differentiate good from bad (idiom)

to persuade using all possible arguments (idiom); to act good cop and bad cop in turn

(idiom) to try one's very best to persuade sb; to reason with sb in every way possible