Translation guide
The quality of being strong, resilient, or difficult to deal with, covering physical durability, mental fortitude, and challenging situations.
Describing something that is strong, hard to break, or resistant to wear and tear.
General term for sturdiness and durability of objects or materials.
この靴は丈夫さが自慢です。
These shoes are known for their toughness.
Strength, often used for physical power or resistance to force.
この素材の強さをテストする。
Test the toughness of this material.
Solidity and robustness, often for construction or heavy-duty items.
この机は頑丈さが違う。
This desk has a different level of toughness.
Describing a person's ability to endure hardship, stress, or adversity without giving up.
Mental strength or fortitude; often used in contexts like 心の強さ (strength of heart).
彼女の心の強さに感心した。
I admired her mental toughness.
Loanword from English 'tough', often used for mental or physical resilience in casual contexts.
彼のタフさには驚かされる。
His toughness is surprising.
Tenacity, persistence; emphasizes sticking with something difficult.
彼の粘り強さが勝利につながった。
His toughness led to victory.
Describing a situation, task, or condition that is hard to deal with or endure.
Severity, harshness; used for tough conditions, rules, or environments.
自然の厳しさを実感した。
I felt the toughness of nature.
The degree of difficulty or hardship; more colloquial than 厳しさ.
この仕事の大変さは想像以上だ。
The toughness of this job is beyond imagination.
Formal term for difficulty or hardship; often used in written contexts.
その計画の困難さが明らかになった。
The toughness of the plan became clear.
Describing food that is hard to chew or cut.
Hardness or firmness; used for tough meat or other foods.
この肉の硬さはどうにかならない？
Can't something be done about the toughness of this meat?
Chewiness; can be positive (pleasantly chewy) or negative (too tough).
強さ (tsuyosa) is general strength, applicable to both physical and mental toughness. 丈夫さ (joubusa) emphasizes durability and resistance to damage, often for everyday objects. 頑丈さ (ganjousa) implies solid, heavy-duty robustness, like for furniture or buildings.
この箱は丈夫さが足りない。
This box lacks toughness.
彼の精神的な強さはすごい。
His mental toughness is amazing.
タフさ is a casual loanword. In formal contexts, use 強さ or 粘り強さ for mental resilience, and 丈夫さ or 頑丈さ for physical durability.
このステーキは歯ごたえがありすぎる。
This steak has too much toughness.