noun
fansub; fan-made subtitles
Refers to subtitles created by fans for foreign films or TV shows, or the act of creating them. Common in anime and drama communities.
このアニメのファンサブはとても質が高い。
The fansub for this anime is very high quality.
彼は趣味でファンサブを作っている。
He makes fansubs as a hobby.