Antonyms for the word "deep felt" would be words that describe emotions that are not strong or heartfelt. Some possible antonyms include superficial, shallow, insincere, phony, or feigned. These words suggest that the emotions being expressed are not genuine or are not truly felt. Other antonyms might include indifferent, nonchalant, unemotional, or apathetic, which describe a lack of feeling or interest. When communicating with others, it is important to consider the words we use to describe our emotions and intentions, as different words can convey vastly different meanings and affect how we are perceived by others.