Choose the option opposite in meaning to the underlined word(s).
He has no reason to have his heart in his mouth?
Answer Details
The opposite of "having his heart in his mouth" would be to be confident. When someone "has their heart in their mouth," it means they are anxious, nervous, or fearful about something. Therefore, the correct option is "be confident," which means to have a belief in oneself and one's abilities without fear or doubt.