OB'DURATE, a. [L. obduro, to harden; ob and duro.]

1. Hardened in heart; inflexibly hard; persisting obstinately in sin or impenitence.

2. Hardened against good or favor; stubborn; unyielding; inflexible.

The custom of evil makes the heart obdurate against whatsoever instructions to the contrary.

3. Harsh; rugged; as an obdurate consonant. [Little used.]

OB'DURATE, v.t. To harden. [Not used.]