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  impertinent impervious  
CONTENTS · INDEX · ILLUSTRATIONS · BIBLIOGRAPHIC RECORD
   The American Heritage® Dictionary of the English Language: Fourth Edition.  2000.
 
imperturbable
 
SYLLABICATION:im·per·turb·a·ble
PRONUNCIATION:  mpr-tûrb-bl
ADJECTIVE: Unshakably calm and collected. See synonyms at cool.
OTHER FORMS:imper·turba·bili·ty, imper·turba·ble·ness —NOUN
imper·turba·bly —ADVERB
 
 
The American Heritage® Dictionary of the English Language, Fourth Edition. Copyright © 2000 by Houghton Mifflin Company. Published by the Houghton Mifflin Company. All rights reserved.

CONTENTS · INDEX · ILLUSTRATIONS · BIBLIOGRAPHIC RECORD
  impertinent impervious  
 
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