toughened

(verb) make tough or tougher. Synonyms: toughen. Example: "This experience will toughen her."

(adj) physically toughened. Synonyms: tough (vs. tender). Example: "The tough bottoms of his feet."

(adj) made hard or flexible or resilient especially by heat treatment. Synonyms: tempered (vs. untempered), treated, hardened. Examples: "A sword of tempered steel." "Tempered glass."