One word substitution: a person who is easily deceived.

  • A. credible
  • B. gullible
  • C. sceptical
  • D. cynical

Explanation

Gullible describes someone who believes claims too readily and is therefore easily fooled, and it is close in meaning to credulous. Sceptical and cynical describe the opposite disposition, and credible applies to the claim rather than to the person. This pair of near opposites is examined frequently.

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