Select the most appropriate ANTONYM of the underlined word in the given sentence.
The speaker delivered a profound speech that left the audience deeply moved.

'Profound' means showing great knowledge, insight, or intellectual depth. Its exact antonym is 'Shallow', which means lacking depth, superficial, or insincere.
* Deep: Synonym of profound.
* Occult: Related to supernatural or mystical practices.
* Inventive: Showing creativity or original thought.