B · TOPIK 3–4Adjective
공고하다
solid, firm

ADJ
공고하다
공고한

ADJ
solid,firm
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In sentences from our articles
, .
In the Joseon Dynasty, the use of family names became widespread with the increase of the gentry class, and this became even more solidified, interlocking with Confucian values that emphasized the prosperity and honor of the clan.
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