Select the most appropriate ANTONYM of the given word.

Upgrade

Demote

The most appropriate antonym of the word upgrade is demote.

• Upgrade means "to improve or make better."
• Demote means "to lower in rank or status."

The other words do not have the same meaning as upgrade, so they are not its antonyms.

• Advance means "to move forward or progress."
• Lean means "to incline or slope."
• Elevate means "to raise or lift up."