Select the most appropriate synonym of the given word.

SOLID

firm

The most appropriate synonym of the given word SOLID is FIRM.

• Solid means having the quality of being firm or hard.
• Firm means having a strong, compact, and stable structure.
• Flat means having a smooth, even surface without any bumps or ridges.
• Hollow means having a space or cavity inside.
• Vacant means empty or unoccupied.