What is the meaning of "Cross" in the title Cross Ange? &quot;Ange&quot;, apart from the obvious reference to the main character, also means &quot;angel&quot; in French and implies the connection between Ange and Vilkiss, which has an angel sculpture on its head. This connection also extends to the full title Cross Ange: Rondo of Angels and Dragons, which foreshadows the end of Ange's journey, as seen in the last few episodes.
However, &quot;Cross&quot; doesn't quite make sense in the title. According to the preview at the end of episode 24, subtitle by CrunchyRoll:

What the hell did &quot;Cross&quot; in Cross Ange mean, anyway?
Ange is always cross, I guess?
It's a pun?!

1 Cross in this context means &quot;angry or annoyed&quot;, according to Oxford Learner's Dictionary.
While it somewhat makes sense, this seems to be a liberal translation to match the fact it is a pun in Japanese.
What is the original explanation in Japanese? Is there any other official explanation of what &quot;Cross&quot; mean in the title?
The original explanation in Japanese in the preview cited in the question is


  「アンジュが苦労｛くろう｝する」ってことでしょう？


which roughly translates to


  Ange has been through many hardships, I guess?


In Japanese, the pun is on Cross - クロス (kurosu) and 苦労｛くろう｝する (kurou suru).

As of the time of writing, this is the most official explanation on the meaning of "Cross" in Cross Ange.