悪いけど行けないよ。

悪いけど行けないよ。

I'm sorry I can't go.

悪(わる)いけど行(い)けないよ。

Warui kedo ikenai yo.

悪い (わるい)

bad; poor; inferior; evil; sinful; unprofitable; unbeneficial; at fault; to blame; in the wrong; sorry

けど (けど、けれども、けれど、けども、けんど)

but; however; although

行ける (いける、イケる)

to be good (at); to go well; to look (taste, etc.) good

よ (よ)

indicates certainty, emphasis, contempt, request, etc.; used when calling out to someone; used to catch one's breath or get someone's attention; yo!

Readings: アク、オ、わる.い、わる-、あ.し、にく.い、 -にく.い、ああ、いずくに、いずくんぞ、にく.む

Meanings: bad, vice, rascal, false, evil, wrong

Readings: コウ、ギョウ、アン、い.く、ゆ.く、 -ゆ.き、 -ゆき、 -い.き、 -いき、おこな.う、おこ.なう

Meanings: going, journey, carry out, conduct, act, line, row, bank