Synonyms of fundamentally in English:

fundamentally


See US English definition of fundamentally

See UK English definition of fundamentally

See Spanish definition of esencialmente

adverb

1‘they were of fundamentally different temperaments’

SYNONYMS
basically, elementally, radically
structurally, organically, constitutionally, inherently, intrinsically, materially
vitally, essentially
crucially, centrally, critically
ANTONYMS

superficially

2‘she was, fundamentally, a good person’

SYNONYMS
essentially, in essence, basically, at heart, at bottom, deep down, principally, predominantly, above all, first of all, most of all, first and foremost, on the whole, by and large, substantially
au fond
informal at the end of the day, when all is said and done, when you get right down to it
ANTONYMS

ostensibly