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.
These shoes are known for their toughness.
Strength, often used for physical power or resistance to force.
Test the toughness of this material.
Solidity and robustness, often for construction or heavy-duty items.
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).
I admired her mental toughness.
Loanword from English 'tough', often used for mental or physical resilience in casual contexts.
His toughness is surprising.
Tenacity, persistence; emphasizes sticking with something difficult.
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.
I felt the toughness of nature.
The degree of difficulty or hardship; more colloquial than 厳しさ.
The toughness of this job is beyond imagination.
Formal term for difficulty or hardship; often used in written contexts.
The toughness of the plan became clear.
Describing food that is hard to chew or cut.
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.
This box lacks toughness.
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.