Select the most appropriate antonym of the given word.

FLEXIBLE

Stiff

The most appropriate antonym of the word flexible is stiff.

• Flexible means "able to bend or be bent easily without breaking."
• Stiff means "not bending easily; rigid."

The other words have different meanings to flexible, so they are not good antonyms.

• Supple means "bendy or pliant."
• Stale means "having lost its freshness or crispness."
• Soft means "not hard or firm."