1‘a fatal disease’
deadly, lethal, mortal, causing death, death dealing, killing
final, terminal, incurable, untreatable, inoperable, malignant
2‘don't make the fatal mistake of assuming others think as you do’
disastrous, devastating, ruinous, catastrophic, calamitous, cataclysmic, destructive, grievous, dire, crippling, crushing, injurious, harmful, costly
We take a look at several popular, though confusing, punctuation marks.