What does 効果 mean?
効果 is a Japanese noun meaning “effect, result” in English. It can also be translated as “effects (e.g. sound effects, visual effects, special effects)” depending on context. It is written as 効果 in kanji, こうか in hiragana, and kouka in romaji. This word is part of JLPT N3 vocabulary.
Example sentence
彼らがいくら弁解しても彼女には何の効果もなかった。
Their excuses cut no ice with her.