不懈
búxiè
unremitting; untiring
Every meaning
bùxiè
- unremitting; untiring
Its characters
- 不bùnot; no
- 懈xièslack; lax (as in 松懈)
Words with 不
Words with 懈
Meanings are from Mandarin The Wild’s own dictionary. Levels follow the official HSK word list (the exam’s 2025 syllabus, levels 7–9 shown together).