The harm has occurred, and nothing can be done to prevent it now; it might have been preventable, but cannot be prevented retroactively.

In a damaging manner

plural of damage control

A large gazelle native to the Sahara desert, Nanger dama

plural of dama gazelle

Without damage; unharmed

(rare) Characterised by or causing damage; harmful

plural of damaging

Injury or harm; the condition or measure of something not being intact. / (slang) Cost or expense.

(transitive) To impair the soundness, goodness, or value of; to harm or cause destruction. / (intransitive, obsolete) To undergo damage.