1.
sturdy; solid; robust
strongly built, durable, and able to withstand wear or damage
この机は頑丈だ。
This desk is sturdy.
頑丈な鍵でドアを施錠した。
I locked the door with a sturdy lock.
古い建物だが、造りは頑丈だ。
It's an old building, but the construction is solid.
2.
strong; healthy (of a person's constitution)
having a robust physical constitution that resists illness
祖父は頑丈な体をしている。
My grandfather has a strong constitution.
彼は頑丈で滅多に風邪を引かない。
He's robust and rarely catches colds.
頑丈な体に生んでくれた両親に感謝している。
I'm grateful to my parents for giving me a strong constitution.
USAGE:
頑丈 describes both physical objects (sense 1) and human constitutions (sense 2). For objects, it emphasizes durability and resistance to damage. For people, it emphasizes resistance to illness.
RELATED VOCABULARY:
- 丈夫(な) - strong, durable (more common for both objects and health)
- 堅固(な) - solid, firm (more formal)
- 頑固(な) - stubborn (different word, same first kanji)
COMMON COLLOCATIONS:
- 頑丈な造り - solid construction
- 頑丈な体 - robust constitution