堅実

1. Origins, structure, and basic meaning

• Structure: 堅実 is read as けんじつ and is an evaluative na-adjective expression used before nouns as 堅実な生活 and 堅実な計画.
• Basic usage: It describes a prudent, steady approach such as regular saving or a reliable plan without flashiness.

2. Common pitfalls and similar expressions

• Modifier form
  • Use な before the noun rather than attaching 堅実 directly.
• Evaluation
  • It means sound and dependable here, not physically hard or personally stubborn.