Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
spoil [spɔɪl] (pt, pp spoilt or spoiled) vt (damage, mar) по́ртить*(испо́ртить*perf) (indulge) балова́ть (избалова́ть perf)
vi
he's spoiling for a fight он так и ле́зет в дра́ку
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.