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硬い， 固い， 堅い， 緊い， かたい
1. hard, solid, tough
2. stiff, tight, wooden, unpolished (e.g. writing)
3. strong, firm (not viscous or easily moved)
4. safe, steady, honest, steadfast
5. obstinate, stubborn
6. bookish, formal, stuffy
tbd
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茹でる， 煠でる， ゆでる， うでる
1. to boil (something in hot water)
2. to treat with medicinal steam (a swelling, etc.)
在沸水中煮(东西)；用药蒸汽治疗(肿胀等病症)