Translation guide
The quality of being solid, steady, or resolute. This guide covers physical firmness (texture, structure), mental firmness (determination, resolve), and firmness in handling or management.
Describing something that is not soft, yielding, or easily deformed; having a solid, stable texture or structure.
The most common and general word for physical firmness, hardness, or stiffness. Can be used for food, materials, ground, etc.
This tofu has just the right firmness.
The firmness of the mattress doesn't suit me.
Often interchangeable with 固さ, but can emphasize rigidity or hardness (e.g., metal, bone). In many contexts, 固さ is more common for general firmness.
Measure the firmness (hardness) of this metal.
Used for firmness implying tightness, compactness, or reliability (e.g., a firm knot, solid wood). Less common than 固さ for everyday texture.
This wood has firmness (is solid and tight-grained).
Describing a person's unwavering attitude, strong will, or resoluteness.
Also used metaphorically for mental firmness, often in phrases like 意志の固さ (firmness of will).
I admire the firmness of his will.
An adjective meaning firm, resolute, determined. Often used in formal or written contexts.
Means unwavering, steadfast. Describes firmness that does not shake or change.
Similar to 断固たる, meaning firm and unshakable. Slightly more literary.
Describing a firm hand in dealing with people or situations, not lenient or wavering.
Often used for firmness implying strictness or severity, e.g., in discipline or management.
Children need a certain degree of firmness (strictness).
Adjectival form of 断固, meaning firm and resolute in action or decision.
A versatile adjective meaning firm, steady, reliable. Can describe a person's character or handling of things.
He's a firm (steady, reliable) person, so I can trust him with it.
All three can be read かたさ and mean firmness/hardness, but they have different nuances. 固さ is the most general and commonly used for texture, consistency, and abstract firmness. 硬さ emphasizes rigidity and is often used for materials like metal or stone. 堅さ implies tightness, compactness, or reliability, and is less common. In many everyday contexts, 固さ is the safest choice.
English 'firmness' covers a wide range of meanings. Direct translation as 固さ may not always fit. For mental resolve, consider 断固たる態度 or 揺るぎない信念. For strictness, 厳しさ is often better. Always consider the specific nuance you want to convey.
He refused with firmness (a firm attitude).
I was impressed by the firmness of her unwavering conviction.
Face it with firm determination.
The boss took firm measures.