augment

augment
    v 1: enlarge or increase; "The recent speech of the president
         augmented tensions in the Near East"
    2: grow or intensify; "The pressure augmented"
    

Augment \Aug*ment"\, v. t. [imp. & p. p. {Augmented}; p. pr. &
   vb. n. {Augmenting}.] [L. augmentare, fr. augmentum an
   increase, fr. augere to increase; perh. akin to Gr. ?, ?, E.
   wax, v., and eke, v.: cf. F. augmenter.]
   1. To enlarge or increase in size, amount, or degree; to
      swell; to make bigger; as, to augment an army by
      re["e]forcements; rain augments a stream; impatience
      augments an evil.
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            But their spite still serves
            His glory to augment.                 --Milton.
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   2. (Gram.) To add an augment to.
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Augment \Aug*ment"\, v. i.
   To increase; to grow larger, stronger, or more intense; as, a
   stream augments by rain.
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Augment \Aug"ment\, n. [L. augmentum: cf. F. augment.]
   1. Enlargement by addition; increase.
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   2. (Gram.) A vowel prefixed, or a lengthening of the initial
      vowel, to mark past time, as in Greek and Sanskrit verbs.
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   Note: In Greek, the syllabic augment is a prefixed ?, forming
         an intial syllable; the temporal augment is an increase
         of the quantity (time) of an initial vowel, as by
         changing ? to ?.
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78 Moby Thesaurus words for "augment":
      add to, agent provocateur, aggrandize, aggravate, amplify, annoy,
      bloat, blow up, boost, broaden, build, build up, bulk, bulk out,
      compound, crescendo, deepen, deteriorate, develop, dilate, distend,
      embitter, enhance, enlarge, exacerbate, exalt, exasperate, expand,
      extend, fatten, fill out, fortify, heat up, heighten, hike,
      hike up, hot up, huff, increase, inflate, intensify, irritate,
      jack up, jump up, lengthen, magnify, make acute, make worse,
      manifold, maximize, mount, multiply, parlay, provoke, puff,
      puff up, pump, pump up, put up, pyramid, raise, rarefy, recruit,
      reinforce, rise, sharpen, sour, strengthen, stretch, sufflate,
      supplement, swell, thicken, up, upsurge, wax, widen, worsen