From Wiktionary, the free dictionary
قَبُحْتُمْ • (qabuḥtum) (form I) /qa.buħ.tum/
- second-person masculine plural past active of قَبُحَ (qabuḥa)
قبحتم (form II)
- قَبَّحْتُمْ (qabbaḥtum) /qab.baħ.tum/: second-person masculine plural past active of قَبَّحَ (qabbaḥa)
- قُبِّحْتُمْ (qubbiḥtum) /qub.biħ.tum/: second-person masculine plural past passive of قَبَّحَ (qabbaḥa)