硬い
katai[ka̠ta̠i]
The English phrase 'something is hard' is translated into Japanese as 硬い (katai).
硬い is used to describe an object that is firm or solid to the touch. While it primarily refers to physical texture or firmness, it can also be used metaphorically to describe a person's character as being rigid or uncompromising.
Which one should you use?
It is important to distinguish between physical hardness and difficulty. 硬い refers to physical texture, whereas 難しい is used when a task or concept is difficult. For informal situations where something is tough or demanding, you might hear きつい.
How do you pronounce it?
katai
What mistakes should you avoid?
Do not confuse 硬い, which describes physical firmness, with 難しい, which means a task is difficult.
Did you know?
- The term 硬い is used in the Japanese expression 手が硬い (te ga katai), which literally means 'hands are hard' but is actually a way to describe someone who is stingy or not generous with money.
- While 硬い describes physical hardness, the term 固い is a homophone that is often used for things like 'firm determination' or 'unbreakable bonds'. Although they sound the same, the kanji choice changes the nuance from physical texture to abstract strength.
- The word 硬い can be used to describe a person's speech as being 'stiff' or 'formal', such as when someone is too nervous to speak naturally. In this context, it refers to a lack of fluidity rather than physical texture.
Examples in context
- 物理は本当に難しくて複雑ですPhysics is really difficult and complex.
- このゲーム、めっちゃむずい！This game is super hard!
- このパンは少し硬いです。Kono pan wa sukoshi katai desu.This bread is a little hard.
- 床が硬いので、痛いです。Yuka ga katai node, itai desu.The floor is hard, so it hurts.
- もっと硬い素材を使います。Motto katai sozai o tsukaimasu.I will use a harder material.
Example conversation
陽葵 and 陽太 are checking the quality of a new mattress.
- 陽葵 Himari陽太、このマットレスはどう？Hinata, kono mattoresu wa dou?Hinata, how is this mattress?
- 陽太 Yota少し硬い気がするよ。Sukoshi katai ki ga suru yo.I feel like it is a little hard.
- 陽葵 Himariやっぱり硬いかな？Yappari katai kana?Is it hard after all?
- 陽太 Yotaうん、もう少し柔らかいのがいい。Un, mou sukoshi yawarakai no ga ii.Yeah, something a little softer would be better.
Sources
- Pronunciation: Wiktionary entry 硬い, CC BY-SA 4.0, dump of 2026-09-26.
