Select the most appropriate ANTONYM of the given word. Insecure

The most appropriate antonym of the word insecure is confident.

• Insecure means "not feeling confident or sure of oneself."
• Confident means "having a feeling of self-assurance arising from one's own abilities or qualities."

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

• Suspicious means "having or showing a cautious distrust of someone or something."
• Anxious means "worried or troubled about something."
• Massive means "very large or great in size, extent, or amount."