Eng

Not good...

可不好

Not good

(Bad)

不好

Bad, Not good

不好了

Bad news, Not good

(Bad, For good, Good, It's done, Ready)

不妙

Bad, Not excellent, Not good

不妙了

Bad, Not good

(Not excellent, Wonderful)

不佳

Bad, Not good, Poor

不利

Adverse, Bad, Not going, Not good, Unfavorable

到不行

Not good, Unbearable

(Can't, No, Nope, Not allowed, Unable to)

幹了

Bad, Dire, Doing, Done, Not good

真不好

Not good, Truly

(Bad)