toughens

Becomes more durable

Toughens is the third-person singular of toughen, meaning to make or become tough.

Repeated exposure toughens skin, and experience toughens character: Years of rejection toughened her resolve.

When regulations toughen, they become stricter: The league toughened its drug-testing policy.

hardens

tempers

Emotional states prone to anger

strengthens · fortifies · reinforces · seasons · conditions · steels · firms · stiffens · sets · densifies

intensifies

strengthens

Increases force or durability

bolsters · amplifies · builds · ramps up · increases · magnifies · augments · elevates · raises · stiffens

resilience

fortitude

Enduring courage under pain

stamina · perseverance · mettle · backbone · steadfastness · robustness · durability · hardiness · ruggedness · courage

endurance

withstands

Tolerates without yielding

tolerates · sustains · endures · persists · overcomes · weathers · outlasts · resists · braves · faces

Opposites
hardness/texture

toughenssoftens

Reduces intensity or hardness

tenderizes · loosens · relaxes · supples · flexes

strength/resilience

toughensweakens

Reduces strength or power

enfeebles · debilitates · undermines · erodes · deteriorates

character/resolve

toughenssoftens

Reduces intensity or hardness

weakens · coddles · pampers · sensitizes · breaks

Phrases
Family

toughen, tougher, toughest, toughened, toughening, toughen up, toughener, untoughened

Familiarity
Top 100,000
Profile
Known to kids · Used worldwide · Timeless · Everyday, not technical · Rated G