Easy, now especially in a disparaging sense; contemptibly easy.
Lazy, simplistic (especially of explanations, discussions etc.).
Effortless, fluent (of work, abilities etc.).
Of a reaction or other process, taking place readily.
That makes one ‘die’ with laughter; very funny.
That literally deprives of life; lethal, deadly, fatal.
A large amount of money.
An instance of someone being killed.