firm, unyielding 
unnachgiebig 
inflessibile 
indéfectible 
inflexible firm, unyielding 1 刚强 [剛-] gāngqiáng (firm-strong) firm, unyielding: 意志 (yìzhì) ~ strong-willed || ~的性格firm character || ~地跑完了马拉松 to strongly finish running a marathon '| Goethebuch | Vietnamese |
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