toughened

Từ điển Oxford Learners Wordfinder Dictionary

adjective

1. made hard or flexible or resilient especially by heat treatment
- a sword of tempered steel
- tempered glass
• Syn:
tempered, treated, hardened
• Ant:
untempered (for: tempered)
• Similar to:
curable, sunbaked
2. physically toughened
- the tough bottoms of his feet
• Syn:
tough
• Ant:
tender (for: tough)
• Similar to:
calloused, callous, thickened, enured, inured,
hardened, weather-beaten
• See Also:
experienced, experient, rugged, strong