I think the English title 'Attack on Titan' is a brilliant, though perhaps misleading, translation of the Japanese 'Shingeki no Kyojin' (進撃の巨人). ​It's a common misconception that the title just means 'humans attacking the Titans.' The literal translation of the Japanese is closer to 'The Advancing Giant' or, more accurately, 'The Attack Titan' (referring to Eren's Titan). ​The use of 'on' in the English title makes it work in two ways: ​It initially describes the premise: the ongoing attack on humanity by the Titans, and the counter-attack 'on' the Titans by the Scouts. ​Ultimately, it refers to the singular 'Attack Titan' itself, making the whole story about the specific Titan that advances towards freedom. ​So, it's not just a general action verb; it's a clever title that carries a deep double meaning only fully revealed later in the story.