What does 必ず mean?
必ず is a Japanese adverb meaning “without fail, always” in English. It is written as 必ず in kanji, かならず in hiragana, and kanarazu in romaji. This word is part of JLPT N5 vocabulary.
Example sentence
あの歌は必ずヒットするよ。
That song's bound to be a hit.