fal-yawma
So today
REM – prefixed resumption particle fa + DET – determiner prefix al + T – accusative masculine time adverb
Root Link: ى و م
āmanū
believed
V – 3rd person masculine plural (form IV) perfect verb + PRON – subject pronoun waw
Root Link: ا م ن
l-kufāri
the disbelievers
DET – determiner prefix al + N – genitive masculine plural noun
Root Link: ك ف ر
yaḍḥakūna
they will laugh
V – 3rd person masculine plural imperfect verb + PRON – subject pronoun na
Root Link: ض ح ك