At heart synonyms such as au fond, actually, and at bottom. At heart is an adverb, and its antonyms are on the surface and superficially. Additionally, here are 16 synonyms, related words, and verbs for at heart.
16 synonyms for at heart
actually, at bottom, au fond, basically, deep down, essentially, fundamentally, in essence, in fact, in truth, innately, intrinsically, really, truly, and when you get right down to it.