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Webster 1913 Edition
Unboundably
Un-bound′a-bly
,adv.
Infinitely.
[Obs.]
I am . . .
unboundably
beholding to you. J. Webster (1607).
Definition 2024
unboundably
unboundably
English
Adverb
unboundably (comparative more unboundably, superlative most unboundably)
- (obsolete) Beyond measure; infinitely.