Children's, Intermediate and Advanced Online English Dictionary & Thesaurus

Comprehensive
Dictionary Suite
Help
Help
Help
 
Advanced Dictionary    
Display options
Show syllables
Show Lookup History
Double-Click Lookup
  Show Spanish support
 
Pronunciation
Wordsmyth
  Phonics
  IPA
 
Entry formats
Standard
  Classic
 
Lookup History
indubitable

in·du·bi·ta·ble

indubitable

 
pronunciation:
ihn du bih t bl
features:
Word Parts
part of speech: adjective
definition: without question; certain.
That there will be another eruption of the volcano is indubitable; the question is when.
antonyms:
doubtful, dubious, questionable
similar words:
absolute, beyond question, certain
derivations: indubitably (adv.), indubitability (n.), indubitableness (n.)
Word Parts
The word indubitable contains the following part:
in-2 Latin prefix that means not, without
Show wordsHide wordsMore about this word part:
The prefix in-2 occurs in Latin loanwords and attaches to Latinate bases. The bases of most words prefixed with in-2 are independent adjectives (inadvertent , incognizant ), although the base adjective may no longer be in widespread use (as with incessant ). Exceptions include iniquitous and indignant . -in2 has multiple forms, as the 'n' sound in in-2 assimilates to the initial sound of the base to which it is attached. See the assimilated forms ig-, il-2, im-2, and ir-2.