unquestioning

From un- +‎ questioning.

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unquestioning (comparative more unquestioning, superlative most unquestioning)

1. Believing without question; having absolute loyalty.

   Synonyms: faithful, doubtless

2. (chiefly derogatory) Naive, blind, uncritical.

   unquestioning faith

• unquestioningly

• “unquestioning”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.
• “unquestioning”, in Cambridge English Dictionary, Cambridge, Cambridgeshire: Cambridge University Press, 1999–present.
• “unquestioning” in Longman Dictionary of Contemporary English, Longman.