The kanji 頑頑 primarily conveys the idea of stubbornness, obstinacy, or firmness. It suggests a resistance to change or influence, a steadfastness of will, or a strong and unyielding nature. It can also imply strength, durability, or being hard.

・On-yomi (音読み): がん (gan) ・Kun-yomi (訓読み): かたくな (katakuna)

⚫︎頑固 (がんこ) Translation: stubborn; obstinate; headstrong ⚫︎頑丈 (がんじょう) Translation: solid; firm; sturdy; strong ⚫︎頑なに (かたくなに) Translation: stubbornly; obstinately

The kanji 頑頑 is a phono-semantic compound (形声文字). It is composed of the radical 页 (おおがい) (page, head) on the left, which signifies the head or something related to the head, and the phonetic component 元 (げん) (origin, beginning) on the right. 元元 provides the sound and hints at the meaning. Together, the components suggest a firm or unyielding head, reflecting the meaning of stubbornness or obstinacy.