toughen up
B1 neutral mixed both
In simple words
become stronger and harder to upset or hurt
Literal meaning: to make something tough or to become tough, with 'up' adding the idea of increase or development
Meanings
1 B1
idiomatic
neutral
to become mentally or emotionally stronger and better able to deal with difficulty
"Living abroad on her own really toughened her up."
Grammar: inseparable
2 B2
idiomatic
neutral
to make someone stronger, stricter, or less sensitive
"The coach tried to toughen the squad up before the final."
Grammar: separable
3 B1 neutral
to become physically stronger or more resistant
"These hiking trips will toughen you up in no time."
Grammar: mixed
Usage notes
Often used for mental or physical strength. In direct commands like 'Toughen up!', it can sound unsympathetic.
Commonly used with
skin attitude mind team players training
Forms
Base
toughen up
I/you/we/they
3rd person
toughens up
he/she/it
Past simple
toughened up
yesterday
Past participle
toughened up
have + pp
-ing form
toughening up
continuous
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Synonyms
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