Doubter

noun

Definitions

Noun
  1. 1
    One who doubts.

    "I have a great deal of sympathy with scientific doubters, and with those who test psychicism up hill and down dale and are not satisfied."

  2. 2
    someone who is doubtful or noncommittal about something wordnet
  3. 3
    someone who habitually doubts accepted beliefs wordnet

Etymology

From doubt + -er.

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