un bound

unbound

[uhn-bound]
verb
1.
simple past tense and past participle of unbind.
adjective
2.
not bound, as a book.
3.
free; not attached, as by a chemical bond: unbound electrons.

Origin:
before 900; (adj.) Middle English unbounde, unbunden, Old English unbunden; see un-1, bound1

unbound, unbounded.
Dictionary.com Unabridged

unbind

[uhn-bahynd]
verb (used with object), unbound, unbinding.
1.
to release from bonds or restraint, as a prisoner; free.
2.
to unfasten or loose, as a bond or tie.

Origin:
before 950; Middle English unbinden, Old English unbindan; cognate with German entbinden. See un-2, bind

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
unbind (ʌnˈbaɪnd)
 
vb , -binds, -binding, -bound
1.  to set free from restraining bonds or chains; release
2.  to unfasten or make loose (a bond, tie, etc)

unbound (ʌnˈbaʊnd)
 
vb
1.  the past tense and past participle of unbind
 
adj
2.  (of a book) not bound within a cover
3.  not restrained or tied down by bonds
4.  (of a morpheme) able to form a word by itself; free

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

unbind
O.E. unbindan, "to free from binding," from un- (2) + bind. Cf. Ger. entbinden, Du. ontbinden. Lit. and fig. senses both present in O.E.
"Suæ huæt ðu unbindes ofer eorðu bið unbunden in heofnum." [Lindisfarne Gospels, Matt. XVI.19]
Unbound is from O.E. unbunden, in literal sense. Figurative sense first attested late 14c.; of books from 1540s.
Online Etymology Dictionary, © 2010 Douglas Harper
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