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Minimalist Dictionary
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toughening
verb
To make tough.
To become tough.
noun
The process of making something tougher.
Word Frequency 1800~2019
Related words
Other words
banjo
devotedly
glaring
neurotic
rasping
headache
unsure
upstage
trace
footwear
thwarting
doctrine
wispy
coherence
task
nuclei
headless
canyon
slashing
reforest
annealed
baked
burned
burnt
calloused
enured
hardened
inured
sunbaked
tempered
thickened
tough
treated
weather-beaten
hardening