The Collaborative International Dictionary of English v.0.48:

Swinge \Swinge\, v. t. [imp. & p. p. Swinged (sw[i^]njd); p.
   pr. & vb. n. Swingeing (sw[i^]nj"[i^]ng).] [OE. swengen,
   AS. swengan to shake, causative of swingan. See Swing.]
   1. To beat soundly; to whip; to chastise; to punish.
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            I had swinged him soundly.            --Shak.
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            And swinges his own vices in his son. --C. Dryden.
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   2. To move as a lash; to lash. [Obs.]
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            Swinges the scaly horror of his folded tail.
                                                  --Milton.
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The Collaborative International Dictionary of English v.0.48:

Swingeing \Swinge"ing\, a.
   Huge; very large. [Colloq.] --Arbuthnot. --Byron. --
   Swinge"ing*ly, adv. --Dryden.
   [1913 Webster]

WordNet (r) 3.0 (2006):

swingeing
    adj 1: severe; punishingly bad; "swingeing taxation"; "swingeing
           damages awarded by the judge"

Moby Thesaurus II by Grady Ward, 1.0:

28 Moby Thesaurus words for "swingeing":
   Draconian, bully, capital, champion, considerable, daunting,
   devastating, drastic, enormous, excessive, excruciating,
   exorbitant, famous, harsh, huge, immense, major, oppressive,
   painful, prime, punishing, severe, stringent, stunning, superior,
   thumping, top, violent