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certain

see definition of certain
  • adjconfident
  • adjundoubtable, valid
  • adjfixed
  • adjreferring to a specifically known amount
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Synonyms for certain

adj confident
  • convinced
  • positive
  • sure
  • assertive
  • assured
  • believing
  • calm
  • cocksure
  • questionless
  • sanguine
  • satisfied
  • secure
  • self-confident
  • unconcerned
  • undisturbed
  • undoubtful
  • undoubting
  • unperturbed
  • untroubled

Antonyms for certain

  • doubtful
  • indefinite
  • uncertain
  • unsure
  • doubting
  • dubious
  • faltering
  • hesitant
  • questionable
  • unconfident
  • undecided
  • unfixed
  • unpredictable
  • unreliable
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.

More words related to certain

accurate

adjective. correct, without error

approved

adjective. certified
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.
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