Translation

The Japanese word for "Ape" is ruijin'en 類人猿.

Romaji ru i ji n e n
Hiragana
Katakana
Kanji
Meaning Type Human Monkey
School Level 小4 小1

Loan-word

The word "Ape" katakanized would be eipu エイプ.
Romaji e i pu
Katakana
Hiragana

Further Reading

Wikipedia: Ape (類人猿)