حَتَّىٰۤ إِذَا فَتَحۡنَا عَلَیۡهِم بَابࣰا ذَا عَذَابࣲ شَدِیدٍ إِذَا هُمۡ فِیهِ مُبۡلِسُونَ ۝٧٧
ḥattā idhā fataḥnā ʿalayhim bāban dhā ʿadhābin shadīdin idhā hum fīhi mub'lisūn
Abdel Haleem: until We open a gate to severe torment for them- then they will be plunged into utter despair

Interlinear Analysis

1
ḥattā
حَتَّى
Root: ح ت ى
Prep.
2
idhā
إِذا
Root: إ ذ ا
Noun
3
fataḥnā
فَتَحَ
Root: ف ت ح
Verb
4
ʿalayhim
عَلَى
Root: ع ل ي
Prep.
5
bāban
باب
Root: ب و ب
Noun
6
dhā
ذُو
Root: ذ و
Noun
7
ʿadhābin
عَذاب
Root: ع ذ ب
Noun
8
shadīdin
شَدِيد
Root: ش د د
Noun
9
idhā
إِذا
Root: إ ذ ا
Noun
10
هُمْ
hum
Noun
11
fīhi
فِي
Root: ف ي
Prep.
12
mub'lisūna
مُبْلِس
Root: ب ل س
Noun