Related formstough·en·er, noun
Examples from the Web for toughen
Philip has never been given to displays of emotion, and saw his role as a father to ‘toughen up’ his sons.
The African-American community wants Obama to toughen up and fight back.
Valdes-Rodriguez is dating a New Mexico cowpoke who is attempting to toughen up her son.
Perhaps they are planning to toughen up the bill, not in the shadows of committee but in the sunshine of open debate.
While we celebrate our progress in 2009, we must toughen our resolve not to back off one iota.
"We'll live in fur and toughen ourselves," said Ernest Hume.The Day of His Youth|Alice Brown
When each part is trimmed accurately to measure, they are put aside to toughen.Pottery, for Artists Craftsmen & Teachers|George J. Cox
Do not let the meat boil too hard or too long, as this will toughen it and extract the juices.Housekeeping in Old Virginia|Marion Cabell Tyree
But my dresses are high-necked, and by bathing I toughen my skin.
This tends to toughen the steel, and it makes a better knife by this extra work.The Library of Work and Play: Working in Metals|Charles Conrad Sleffel