What does 硬い mean?
硬い is a Japanese adjective meaning “hard, firm, solid” in English. It can also be translated as “stiff, strong, safe” depending on context. It is written as 硬い in kanji, かたい in hiragana, and katai in romaji. This word is part of JLPT N3 vocabulary.
Example sentence
卵は硬くゆでてください。
Boil the eggs hard.