Which of the following word is an antonym of the word Clandestine?

Overt

The antonym of the word clandestine is overt.

• Clandestine means done in secret or hidden from view.
• Overt means done or revealed openly or publicly.

The other words do not have opposite meanings to clandestine.

• Secret means not known or seen by others; hidden.
• Brilliant means very intelligent or talented.
• Necessary means essential or required.