Board Thread:Wiki/@comment-30049797-20160924003216/@comment-5774380-20160925192747

Insieme wrote:

The romaji for Annie's name is "Ani" and "ani' also means "older brother" in Japanese. However, her name is written in katakana "アニ" (Ani). "Ani" for older brother is written in kanji "兄" (ani).

I assumed it was that, that's why in the early revisions of chapter 70's summary the sentence was interpreted as referring to Reiner. :P

Insieme wrote:

It seems that "引き取る" (Hikitoru) also means "to adopt". Check it out.

Good, so unless someone has a better counterargument, we stick with Kodansha USA's translation of "adopted".