(Intransitive) To become accustomed to a new climate or environment.
To become used to.
One of four natural divisions of the year—spring, summer, autumn, and winter—in temperate zones. Each season has its own characteristic weather and lasts approximately three months. The change in the seasons is brought about by the shift in the angle at which the Sun's rays strike the Earth. This angle changes as the Earth orbits in its yearly cycle around the Sun due to the tilt of the Earth's axis. For example, when the northern or southern hemisphere of the Earth is at an angle predominantly facing the Sun and has more daylight hours of direct, overhead sunlight than nighttime hours, it is in its summer season; the opposite hemisphere is in then opposite condition and is in its winter season.
To subject (glass or metal) to a process of heating and slow cooling in order to toughen and reduce brittleness.
To make or become stiff or stiffer
To contract a muscle.
To undermine or reduce the strength, morale, or resistance of.
To make (meat) tender by using a process or adding a substance that softens tissues
To become acclimated or adapted.
To harden the surface or case of (iron or steel) by high-temperature shallow infusion of carbon followed by quenching.
To make hard; harden:
In a strong manner; greatly, severely, vigorously, etc.
To take action in opposition to; try to eliminate, reduce, or stop:
Find another word for toughen. In this page you can discover 22 synonyms, antonyms, idiomatic expressions, and related words for toughen, like: acclimate, drill, enure, harden, inure, season, anneal, stiffen, strengthen, temper and flex.