The Collaborative International Dictionary of English v.0.48:

Swell \Swell\, v. i. [imp. Swelled; p. p. Swelled or
   Swollen; p. pr. & vb. n. Swelling.] [AS. swellan; akin to
   D. zwellen, OS. & OHG. swellan, G. schwellen, Icel. svella,
   Sw. sv[aum]lla.]
   1. To grow larger; to dilate or extend the exterior surface
      or dimensions, by matter added within, or by expansion of
      the inclosed substance; as, the legs swell in dropsy; a
      bruised part swells; a bladder swells by inflation.
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   2. To increase in size or extent by any addition; to increase
      in volume or force; as, a river swells, and overflows its
      banks; sounds swell or diminish.
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   3. To rise or be driven into waves or billows; to heave; as,
      in tempest, the ocean swells into waves.
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   4. To be puffed up or bloated; as, to swell with pride.
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            You swell at the tartan, as the bull is said to do
            at scarlet.                           --Sir W.
                                                  Scott.
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   5. To be inflated; to belly; as, the sails swell.
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   6. To be turgid, bombastic, or extravagant; as, swelling
      words; a swelling style.
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   7. To protuberate; to bulge out; as, a cask swells in the
      middle.
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   8. To be elated; to rise arrogantly.
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            Your equal mind yet swells not into state. --Dryden.
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   9. To grow upon the view; to become larger; to expand.
      "Monarchs to behold the swelling scene!" --Shak.
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   10. To become larger in amount; as, many little debts added,
       swell to a great amount.
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   11. To act in a pompous, ostentatious, or arrogant manner; to
       strut; to look big.
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             Here he comes, swelling like a turkey cock. --Shak.
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The Collaborative International Dictionary of English v.0.48:

Swollen \Swoll"en\,
   p. p. of Swell.
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The Collaborative International Dictionary of English v.0.48:

Swollen \Swoll"en\, a.
   Enlarged by swelling; immoderately increased; as, swollen
   eyes; swollen streams.
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WordNet (r) 3.0 (2006):

swollen
    adj 1: characteristic of false pride; having an exaggerated
           sense of self-importance; "a conceited fool"; "an
           attitude of self-conceited arrogance"; "an egotistical
           disregard of others"; "so swollen by victory that he was
           unfit for normal duty"; "growing ever more swollen-headed
           and arbitrary"; "vain about her clothes" [syn:
           conceited, egotistic, egotistical, self-
           conceited, swollen, swollen-headed, vain]

Moby Thesaurus II by Grady Ward, 1.0:

194 Moby Thesaurus words for "swollen":
   SRO, accelerated, adipose, aggrandized, amplified, augmented,
   aureate, beefed-up, beefy, bellied, big, big-bellied, bloated,
   bloated with pride, blown up, blowzy, bombastic, boosted, bosomy,
   brawny, brimful, brimming, broadened, bug-eyed, bulged, bulging,
   burly, bursting, buxom, capacity, chock-full, choked, chubby,
   chuck-full, chunky, congested, corpulent, cram-full, crammed,
   crowded, deepened, dilated, distended, drenched, dropsical, dumpy,
   edematous, elated, elevated, enchymatous, enhanced, enlarged,
   euphuistic, exophthalmic, expanded, extended, extravagant, farci,
   fat, fattish, filled, filled to overflowing, flatulent, fleshy,
   flowery, flush, flushed, flushed with pride, formal, full,
   full to bursting, fustian, gassy, glutted, goggle, goggled, gorged,
   grandiloquent, gross, heavyset, hefty, heightened, high-flown,
   high-swelling, highfalutin, highfaluting, hiked, hippy, hyperemic,
   hypertrophied, imposing, in spate, incrassate, increased, inflated,
   intensified, jam-packed, jammed, jazzed up, lusty, magnified,
   magniloquent, meaty, mouthy, multiplied, obese, outsized,
   overblown, overburdened, overcharged, overfed, overflowing,
   overfraught, overfreighted, overfull, overladen, overloaded,
   oversized, overstocked, overstuffed, oversupplied, overweight,
   overweighted, packed, packed like sardines, paunchy, plenary,
   plethoric, plump, podgy, pompous, pontifical, popeyed, portly,
   potbellied, pouched, pretentious, proliferated, proud, pudgy,
   puffed up, puffy, pursy, raised, ready to burst, reinforced,
   replete, roly-poly, rotund, round, running over, satiated,
   saturated, self-important, soaked, solemn, spread, square, squat,
   squatty, stalwart, standing room only, stiffened, stilted, stocky,
   stout, strapping, strengthened, stuffed, stuffed up, stuffy,
   supercharged, supersaturated, surcharged, surfeited, swelled,
   swelling, tall, thick-bodied, thickset, tightened, top-heavy,
   topful, tubby, tumescent, tumid, tumorous, turgescent, turgid,
   ventose, ventricose, well-fed, widened, windy