The Collaborative International Dictionary of English v.0.48:

Utterance \Ut"ter*ance\, n. [F. outrance. See Outrance.]
   The last extremity; the end; death; outrance. [Obs.]
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         Annibal forced those captives whom he had taken of our
         men to skirmish one against another to the utterance.
                                                  --Holland.
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The Collaborative International Dictionary of English v.0.48:

Utterance \Ut"ter*ance\, n.
   1. The act of uttering. Specifically:
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      (a) Sale by offering to the public. [Obs.] --Bacon.
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      (b) Putting in circulation; as, the utterance of false
          coin, or of forged notes.
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      (c) Vocal expression; articulation; speech.
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                At length gave utterance to these words.
                                                  --Milton.
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   2. Power or style of speaking; as, a good utterance.
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            They . . . began to speak with other tongues, as the
            Spirit gave them utterance.           --Acts ii. 4.
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            O, how unlike
            To that large utterance of the early gods! --Keats.
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WordNet (r) 3.0 (2006):

utterance
    n 1: the use of uttered sounds for auditory communication [syn:
         utterance, vocalization]

Moby Thesaurus II by Grady Ward, 1.0:

116 Moby Thesaurus words for "utterance":
   Parthian shot, address, adjectival phrase, affirmance, affirmation,
   allegation, announcement, annunciation, answer, antonym,
   apostrophe, articulation, assertion, asseveration, attack,
   averment, avouchment, avowal, clause, comment, conclusion,
   construction, crack, creed, declaration, delivery, dictum,
   enunciation, exclamation, expression, free form, greeting,
   headed group, homograph, homonym, homophone, idiom, idiotism,
   interjection, ipse dixit, lexeme, linguistic act, linguistic form,
   locution, logos, manifesto, manner of speaking, mention, metonym,
   minimum free form, monosyllable, note, noun phrase, observation,
   paragraph, parol, parole, peculiar expression, period, phonation,
   phrasal idiom, phrase, polysyllable, position, position paper,
   positive declaration, predicate, predication, proclamation,
   profession, pronouncement, pronunciation, proposition, protest,
   protestation, question, reflection, remark, say, say-so, saying,
   sentence, sequence of phonemes, set phrase, speaking, speech act,
   stance, stand, standard phrase, statement, string, subjoinder,
   syllable, synonym, syntactic structure, term, the spoken word,
   thought, tongue, turn of expression, turn of phrase, usage,
   utterance string, verb complex, verb phrase, verbalism, verbum,
   vocable, vocalization, voice, voicing, vouch, way of speaking,
   word, word of mouth, word-group