The Collaborative International Dictionary of English v.0.48:

Free \Free\, v. t. [imp. & p. p. Freed; p. pr. & vb. n.
   Freeing.] [OE. freen, freoien, AS. fre['o]gan. See Free,
   a.]
   1. To make free; to set at liberty; to rid of that which
      confines, limits, embarrasses, oppresses, etc.; to
      release; to disengage; to clear; -- followed by from, and
      sometimes by off; as, to free a captive or a slave; to be
      freed of these inconveniences. --Clarendon.
      [1913 Webster]

            Our land is from the rage of tigers freed. --Dryden.
      [1913 Webster]

            Arise, . . . free thy people from their yoke.
                                                  --Milton.
      [1913 Webster]

   2. To remove, as something that confines or bars; to relieve
      from the constraint of.
      [1913 Webster]

            This master key
            Frees every lock, and leads us to his person.
                                                  --Dryden.
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   3. To frank. [Obs.] --Johnson.
      [1913 Webster]

WordNet (r) 3.0 (2006):

freeing
    n 1: the act of liberating someone or something [syn:
         liberation, release, freeing]

Moby Thesaurus II by Grady Ward, 1.0:

71 Moby Thesaurus words for "freeing":
   Emancipation Proclamation, affranchisement, break, breaking out,
   breakout, catharsis, cleansing, clearing, deliverance, delivery,
   disburdening, discharge, disembarrassment, disembroilment,
   disencumbrance, disengagement, disentanglement, disenthrallment,
   disinvolvement, dislodgment, emancipation, emergence,
   emotional release, enfranchisement, escape, escapism, evasion,
   extrication, flight, gay liberation, getaway, intermission,
   issuance, issue, jailbreak, leak, leakage, liberation, lifesaving,
   manumission, outlet, prisonbreak, purgation, purge, purging,
   ransom, recovery, redemption, release, releasing, removal,
   reprieve, rescue, respite, retrieval, riddance, salvage, salvation,
   saving, setting at liberty, setting-free, surcease, suspension,
   uncluttering, unhampering, unknotting, unraveling, unscrambling,
   unsnarling, untangling, vent