Synonyms for Essentially:

adv.

basically (adverb)
inherently, significantly, necessarily, virtually, intrinsically, quite, permanently, importantly, chiefly, at heart, naturally, factually, principally, really, vitally, originally, in essence, radically, primarily, centrally, materially, truly, substantially, more or less so, Determinately, actually, in effect, approximately, Indispensably, at the heart of, typically, intimately, characteristically, fundamentally.
focally (adverb)
focally, centrally.
originally (adverb)
radically.
purely (adverb)
basically, plainly, cleanly, barely, chastely, Stainlessly, starkly, spotlessly, guiltlessly, angelically, simply, sinlessly, Aboriginally, irreducibly, formatively, faultlessly, elementarily, purely, innocently, Atomically, virtuously, immaculately, Indivisibly, primarily, fundamentally, austerely.
substantially (adverb)
considerably, meaningfully, really, physically, importantly, tangibly, actually, substantially, materially, immanently, significantly.

adv

focally (adverb)
focally, centrally.
for all practical purposes (adverb)
virtually.
mainly (adverb)
principally.
most importantly (adverb)
chiefly.
originally (adverb)
radically.
principally (adverb)
vitally, importantly.
purely (adverb)
basically, plainly, cleanly, barely, chastely, Stainlessly, starkly, spotlessly, guiltlessly, angelically, simply, sinlessly, Aboriginally, irreducibly, formatively, faultlessly, elementarily, purely, innocently, Atomically, virtuously, immaculately, Indivisibly, primarily, fundamentally, austerely.
substantially (adverb)
considerably, meaningfully, really, physically, importantly, tangibly, actually, substantially, materially, immanently, significantly.

n.

certainly, evidently, honestly, surely, literally, precisely, clearly. at heart, at bottom, elementary, main, leading, basic, supreme, prime, primary, principal, predominant, surface, chief. basically (noun)
characteristically, virtually, in the main, all the more, intrinsically, principally, Determinately, inherently, factually, intimately, necessarily, vitally, approximately, quite, radically, typically, in effect, permanently, at bottom, more or less so, naturally, at heart, at the heart of, chiefly, Indispensably, originally, truly.
essentially (noun)
fundamentally, in essence, basically, au fond.

Other synonyms:

clearly, certainly, evidently, surely, inherently, honestly. literally. truly, precisely. chiefly
principally.
for all practical purposes
virtually.
in essence
in essence.
Other relevant words:
au fond, naturally, necessarily, honestly, in effect, Indispensably, inherently, radically, vitally, approximately, certainly, principally, chiefly, characteristically, at bottom, at heart, basic, precisely, in the main, in essence, truly, quite, clearly, virtually, intrinsically.

Usage examples for essentially

  1. He, being essentially a fair- weather man, was able to meet her half- way- no more than that, because he was what he was, always his own detective. – Love and Lucy by Maurice Henry Hewlett
  2. This argument is essentially the same as the previous one. – Our Knowledge of the External World as a Field for Scientific Method in Philosophy by Bertrand Russell