Participles are verbal adjectives: present -ns "doing", perfect passive -tus "(having been) done", future -urus "about to do"; standing alone, they act as nouns.
A participle agrees with its noun, which may be some way off, and English often needs a clause, "who …", "when …", "since …", "although …": qui prior laesus … adigitur "who, having been wronged first, is driven …".
Without a noun, a participle is itself a noun: delinquentis "of the wrongdoer", adversantis "of an opponent", irascentium "of angry people".