great pressure, great insistence

hard labour, rigorous labour, hard work

extreme restlessness

grievous bodily harm, severe hurt, serious injury

rigorous imprisonment, burdensome imprisonment

difficult, grievous, grave, heavy, heinous, atrocious, intense, severe, violent, strong

the one who has a extreme of enmity with someone

one who punishes severely, an appellation of Allah

indifferent to profit and loss

cause to inflict grievous injury

hurt, harm,

that which ends in loss, detrimental

harmful, injurious, baneful, damaging

poisonous reptiles

incur loss, suffer

profit and loss, good and evil

impairment, fact of being impaired, deterioration, injurious lessening or weakening

great or grave crime

king of the snakes of hell, extremely terrible, extremely poisonous

allusion to Masjid al-Dirar - a mosque built by hypocrites in Medina which was later destroyed by the order of Prophet Muhammad. This mosque was built by hypocrites in order to cause disunity among the believers

causing injury, damaging, doing harm (to)

violent animosity

detriment, loss, disadvantage, deficiency