What does toughening mean?
Toughening denotes both an action and a process of becoming harder, stronger, or more resilient. As a verb, it describes a person, organization, material, or other subject acquiring greater endurance: difficult training may be described as toughening a team, while controlled heat treatment may toughen metal. As a noun, toughening refers to that process, especially in engineering, manufacturing, and metallurgy, where it can involve altering a material's structure to make it less prone to cracking or wear. In everyday and sporting contexts, “toughening up” means preparing physically or mentally for demanding circumstances. The word often suggests gradual development rather than a sudden change. It is related to the adjective tough and ultimately to an Old English word for physical toughness, while modern cognates survive in languages including German and Dutch.
The process of becoming or making something harder, stronger, more resistant, or more resilient.
"The toughening of the alloy was carried out under carefully controlled temperatures."
As a noun, toughening is especially common in technical and material-science contexts. The plural toughenings is possible but uncommon.
To make or become harder, stronger, more resistant, or more able to withstand difficulty.
"The demanding course was toughening the athletes for competition."
The present participle or gerund toughening can also carry a nominal sense, as in “the toughening of the steel.” The informal phrase “toughening up” means becoming more resilient or preparing for hardship.
The plural is grammatically possible but rare; the process is usually expressed as an uncountable noun.
"Several toughenings of the alloy produced noticeably different hardness values."
Metalworkers can toughen steel by carefully heating and cooling it, changing the material's internal structure so that it resists cracking without simply becoming harder.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does toughening come from?
The base verb toughen developed from the English adjective tough, whose Old English form was tōh. English tough traces to Proto-Germanic *tanhs and is related to cognates such as German zäh and Dutch taai. The English forms toughen and toughening were produced through the familiar use of the suffix -en to form a verb and -ing to form a present participle or verbal noun.
Related word forms
How toughening is actually used
In technical contexts, toughening usually denotes a controlled material or metallurgical process. In everyday use, particularly in the phrase “toughening up,” it means becoming more resilient or preparing for hardship.