Extremely \Ex*treme"ly\, adv. In an extreme manner or state; in the utmost degree; to the utmost point; exceedingly; as, extremely hot or cold. [1913 Webster]

Source: The Collaborative International Dictionary of English v.0.48
 

73 Moby Thesaurus words for "extremely": a bit, a little, a outrance, absolutely, all out, beyond all bounds, beyond compare, beyond comparison, beyond measure, bloody, completely, damned, darned, dead, downright, essentially, ever, exceedingly, exceptionally, excessively, extraordinarily, fairly, flat out, fundamentally, hellishly, hugely, immeasurably, immensely, in a measure, in a way, in some measure, in the extreme, incalculably, indefinitely, infinitely, inordinately, kind of, most, notably, outrageously, over, overfull, overly, overmuch, parlous, perfectly, pretty, purely, quite, radically, rarely, rather, remarkably, scarcely, slightly, somewhat, sort of, strikingly, surpassingly, to a degree, to some extent, too, totally, uncommon, uncommonly, unconditionally, unduly, unequivocally, unusually, utterly, very, vitally, with a vengeance

Source: Moby Thesaurus II by Grady Ward, 1.0
 

extremely ad

verb

1: to a high degree or extent; favorably or with much respect; "highly successful"; "He spoke highly of her"; "does not think highly of his writing"; "extremely interesting" [syn: highly]
2: to an extreme degree; "extremely cold"; "extremely unpleasant"
3: to an extreme degree; "the house was super clean for Mother's visit" [syn: super]
4: to an extreme degree or extent; "his eyesight was exceedingly defective" [syn: exceedingly, passing]

Source: WordNet (r) 2.0
 

Extremely \Ex*treme"ly\, adv. In an extreme manner or state; in the utmost degree; to the utmost point; exceedingly; as, extremely hot or cold.

Source: Webster's Revised Unabridged Dictionary (1913)