What does 充実 mean?
充実 is a Japanese noun meaning “fullness, perfection” in English. It can also be translated as “enhancement, replenishment” depending on context. It is written as 充実 in kanji, じゅうじつ in hiragana, and juujitsu in romaji. This word is part of JLPT N1 vocabulary.
Example sentence
ここ品物は高いけど、その分アフターサービスが充実してるから。
Prices are high here but that's because the after-sale service is really good.