سُوْءَى

is [feminine of ↓ أَسْوَأُ, q. v., as meaning More, and most, evil, bad, abominable, foul, unseemly, unsightly, or ugly: and is also] a subst. signifying an evil, a bad, an abominable, a foul, or an unseemly, action; (Msb, TA;) i. q. فَعْلَةٌ سَيِّيءَةٌ [and سَيِّيءَةٌ alone]: in this sense, [as well as in the former,] (TA,) opposite of حُسْنَى. (S, M, K, TA.)

In the Qur'an, 30:9, (S, TA,) according to the reading commonly known, (TA,) [as opposite of الحُسْنَى,] السُّوْءَى means (assumed tropical:) The fire (S, K, TA) of Hell. (TA.) See also سُوْءٌ, last explanation but one.